FroYo + ADB App2SD: Goodbye, Kingston microSDHC? - Desire General

Good eveneing dear community
I realize that FroYo was a major leap forward for quite a few of us, especially those limited in phone storage (I'm talking about Nexus One and Desire owners in particular). However, I think there is something seriously wrong with those App2SD capabilities.
I recently got the impression that moving applications to SD storage is killing SD cards too fast. Just after the first official FroYo OTA, I discovered and used the posibility to force move applications to SD storage using ADB shell. The result was that virtually any application could be moved out of the phone's internal storage. So far, so good.
But considering that we get updates from the market every few hours, SD cards are under much more pressure now than they were designed to, aren't they? I'm saying this, because in the exact same configuration I mentioned above, my cards keep dying. Before the OTA, I bought an expensive class 10 Kingston microSDHC card and the performance was indeed remarkable. However, after the OTA and my ADB stunt, my card would get mounted as read-only every few days now. In addition to that, I can't run any applications on the card anymore and the entire system becomes unstable. Unmounting the card using the Android system settings is not possible and neither is formatting. Instead, my phone would sometimes reboot. At first I thought this was a problem with my Kingston SD.
When I ran some tests and did the same things with the official 4 GB card that shipped with my phone as well as with another 8 GB card that came with an older Nokia phone of mine I realized that it wasn't a problem specific to my Kingston card. All of them showed the exact same behavior. This is not just annoying, it also causes data loss, which in my case is unnacceptable!
Has anybody experienced the same? Is this a problem of Android 2.2 or is it just the way microSDHC works? What, besides mounting said damaged cards in a Laptop in attempt fix, can we do about it?
Thank you for any suggestions.
My next phone must have at least 8 GB of internal storage...

Define "dying".
If by dying you mean Android reports there's something wrong with your card, then more likely the problem is software-related rather than the SD being overused.
I got the "your card is fubar" message from my phone but it was as a result of me damaging the file system with a sketchy file manager app. I put it in my computer, did a scandisk. This found the problem, fixed it, I put it back in my phone, voila, perfect again.
Or your problem might be related to the method you're forcibly moving the apps to your SD card. Since you're doing it with ADB rather than through the operating system itself, it's possible apps are corrupting your card's file system as a result of not realizing where they're located. Just a guess.
In any case, SD cards don't (and won't) die from the sort of use you're describing. What might be harmful is storing frequently-used cache on your SD card, but that's not something that you're doing.
Keep in mind that SD cards are intended to be used in cameras, camcorders, etc, and these things write a lot more frequently and aggressively to the card than a little app storage here and there.
I'm not exactly an expert but I'm definitely what I'd call an enthusiast, and let me tell you with certainty: you really have nothing to worry about. Your problem is most likely a software (or related file system issue) or else caused by a one-in-a-thousand random hardware defect. Android, or more specifically, app to SD, isn't a problem.
Maybe you've heard of solid state drives for computers, these are becoming more common. I use one in fact. They operate using technology similar to SD card storage and if ANYTHING was going to stress these things, it would be running a whole computer off them, temp files and all.
Finally, if you're still a little afraid, let me remind you that in fact your phone itself uses the same kind of flash storage as an SD card. Every phone, MP3 player, and similar device does. So in a sense, if wearing out your storage is a concern for you, isn't it better to wear out a replaceable SD card than your phone's irreplaceable internal storage?
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So now assuming you trust me that there's nothing to worry about, I would suggest you stop forcibly moving apps to your SD card as a possible long-term solution. If you stop getting card problems, you know what the problem was. Since this means you'll run low on storage, I'd then suggest you install a custom OS that allows you to force-move apps from within Android itself, such as Cyanogenmod.

I've been using this mod since it came out and have had no problems. As mentioned above it must be software related to your phone.
Sent from my HTC Desire

Thank you so much for calming me down. I just got the impression that my cards are toast. However, as long as there is a possibility to fix this using my laptop, I'm on the good side.
I disabled that ADB stunt, let's look what the next few days bring.

Just an idea: if your phone (or the sd slot, for that matter) would be somehow messed up, wouldn't that show the same symptoms? It would even explain why _every_ card acts that way. Maybe it's a bad contact in the slot, who knows...

Related

Transcend 4GB SD getting corrupt repeatedly..

Hi there,
My transcend 4GB SD card is getting corrupted repeatedly.
It abruptly loses data from any folders and that much space also.(Initial 3.93 GB reduced to 3.7 GB even after formatting)
Whenever some files disappear the file explorer notices the loss in MBs but the Resco explorer doesn't as if they still exist but are hidden somewhere.What does that mean?
I have got the card replaced twice but it has happened again and I am fed up.
I didn't swap it,didn't used it while battery was low, never used camera with it yet it is busted.
What is the cause?WM6? ROM?4GB size not meant for Exec?Transcend?
I am getting a new one of NCP anyway, still any explaination is welcome for I really need a 4GB working properly.
kalya said:
What is the cause?WM6? ROM?4GB size not meant for Exec?Transcend?
Click to expand...
Click to collapse
Are you using the latest SPB Backup? If YES, then that is the cause. You probably have it setup doing automatic backup. It is the automatic backup that is faulty. The regular manual backup works fine. It seems the setting for the number of automatic backup corrupts the SD Card. It sometimes can't delete the specified number of backups, and even if you delete it manually it seems some memory was not returned to the SD Card.
---
Ok
Thanks for the suggestion,
I have SPB 1.5.5 but I always use the manual back-up option.
With this card problem I have 'gathered' some info ( not any knowledge ) about the possible causes mentioned here and there,( you people please add your findings also - it may help others )
1. No cause found
2.The card itself may contain actually less space than claimed.
3.Using it on low battery.
4.Using it with a broken/ another card reader.
5.Having more than 2 GB empty space on it while using the camera function.
6.Removing the card while the device is on.
7.Transcend not compatible with Universal.( though I saw many posts regardless the manufacturers)
I am in the first category metioned above.
No motive,
No evidence,
3 murders and counting...
Eagrly waiting for the NCP one.
I can definitely say I don't have any of the above except number 1. The only cause I have is SPB Backup automatic feature. I too am using Transcend 150X 4GB SD Card.
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Well you should be happy. ;-) I now only have 3.4gb on my 4gb transcend 45x card. (TS4GSDC)
It started with loosing data so I formatted it. Had no option. After that there was only 3.4gb. Even tried transcends own fix-program (Transcend Fix-Capacity 'Toolver' <sic!>), tried partition magic, partition manager and even Win XP partition removing and making a new one.
Even tried 2 partitions, but the sum of them dont exceed 3.4gb anyway.
Seems the card got corrupted somewhere so its impossible to use more than 3.4gb (Or 3466mb to be exact)
It does make me pissed because when you pay for 4096mb you should be able to access all of that.
I doubt it to be a Universal issue... Think its the crappy card!
Think I should return it and maybe go for the 150x (TS4GSD150) but I read that you all have had similar problems with them.
Is there some sort of Low-level formatter that can fix this?
Otherwise I just stick to my 3.4gb and hope that it will not loose data again.
DrBeer said:
I doubt it to be a Universal issue... Think its the crappy card!
Think I should return it and maybe go for the 150x (TS4GSD150) but I read that you all have had similar problems with them.
Click to expand...
Click to collapse
I'd return it. Yours sounds like a definite Card problem. They have Lifetime Warranty anyway. Then go for the 150X.
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Yeah. You're right. Dont feel like I can trust this card anymore. And that is one thing that is important. We all know how much effort we put into tweaking and filling up a 4gb card... Only to find it looses data.
Takes a whole day to get it right again.
I will return it tomorrow, and chip in some extra cash to get a 150x.
Probably more stable and reliable...
Keep me posted!
DeBeer,
Good luck with the 150x one.I have already returned my third...all 150x.
If it solves your problem please post here,say in a week or so after using it;
If it does not...
RE
FYI, I've a 4GB 150x TRANSCEND SD card and have been using it since the day I bought it.
No problem so far with my WM5. Formatted it with my WinXP
Unless you've a faulty card or a faulty card reader/writer I don't see why you're getting corrupted data.
One thing I can think off is if you're using some kind of auto backup program and removing your card unknowingly at the same time. This can cause your data to be corrupted. Beware that it takes time to save(write) info to your card when using the Universal. Removing the card immediatedly when saving(writing) is in progress is sure to cause data corruption. Leave a few seconds (I would say 10secs) after saving before removal of card
Quote
"It does make me pissed because when you pay for 4096mb you should be able to access all of that"
Not true. When you format a card like you format a harddisk there's some overhead being used so your actual free space is less
thanks
Now this is new( for me ) and valuable information that Universal takes some time to save the data.I WILL take care in the future.Thank you.
Please explain the phenomenon why default file explorer and the Resco explorer read the card differently i.e. file explorer won't show the corrupt folders memory while Resco does (in properties only).
RE
Quote
"Please explain the phenomenon why default file explorer and the Resco explorer read the card differently i.e. file explorer won't show the corrupt folders memory while Resco does (in properties only)"
Can you check the 'Properties' setting like 'Read', 'Hidden' etc
Re. Properties
FOSA,
Very sorry to say,but I never checked those details of the particular folders.Very silly of me.
But my busted card card is still lying at the vendor's so I shall get it back and check what you've suggested.
"Edit--The card is not detected anymore by anything,looks like hardware problem..."
On another forum mamaich says he can use 8GB SDHC with a patch on a Universal
http://forum.xda-developers.com/showthread.php?t=318795&page=2
If it works then...wow, all the best mamaich.

how to use 4 gb memory card in dopod 818pro

Hi,
I am using dopod 818pro. But whenever i use a 4gb(mainly kingstone SD memory card) memory card, it shows, "no memory card installed". But i can use 2gb memory card (any brand).
My config is as follows-
windows mobile 6.1 professional
processor- OMAP850-195MHz
memory- 50.02 mb
ROM version- 7.0.0.7 WWE
ROM DATE- 7/5/8
RADIO VERSION- 02.19.21
RAM size-64mb
So please help me to use 4 GB memory card.
SDHC
The HTC prophet doesn't support SDHC cards (over 2 Gig)!
i'm using non sdhc 4gb card from transcend. make sure your card is not sdhc...
oh yes, but you still need a driver
hey man, if you have a normal SD card with 4GB, it still will not just work ,you needed a driver of some sort, sorry, I had it, but changed my computer some months ago. Maybe someone else has it?
do you?? i just put the card in & my prophet recongnised it.
SD
I used to have MMC and I thought the disable power management would resolve my problem of getting my files disappearing from the card if the path 2 or more folders deep, but when I changed the card to a normal SD (2GB), I had the same problems happening sometimes (but not as frequently as before), but I'm getting another (harder) problem now. I'm saying harder because this seems to be very hard to track because it happens when it wants!!
sometimes the card works for several days without any issue, but sometimes I get a blank card. even though when I look at the status I see the used space and the free space, but when I open it with resco or file explorer it's just blank.
and I even got a worse problem (fortunately it happened only one time yet). since I set the ie and opera cash to the card, these programs created their temp folder on the card again, but everything else was totally erased! I used a recovery software to get my data back!!
as I said, it happened once, but the usual problem is I just see nothing on the card until I shut down, and boot my prophet again. and sometimes it doesn't work until I do this several times.
I think I've looked everywhere to find a solution for my problem, but I didn't find any real solution for it. I've tried several roms, several cards, always getting the same problem. I don't think it's a hardware issue because of its nature. I mean how could it be a hardware issue if the data disappears without even touching my phone? if there is a hardware issue I don't think the card would be recognized at all! or (at least) it won't be recognized after I move it (causing the weak or loose contacts - if any - to disconnect) however, I don't think it's true, because the contacts are clean and tight, and like all HTC devices, the SD slot is high quality.
if anyone can offer a real solution to my problem, then I'll say he/she is the one who enabled me get the full of my HTC Prophet!
So thank you in advance. whoever you are!

Windows Phone 7 - The filesystem and how it is presented to the user

Windows Phone 7 represents a radical leap in the way the filesystem is presented to the user compared to WinMo. No longer will the user be able to access the true, underlying filesystem in any direct way - the OS will abstract the file system to a single view of all files - making no distinction between files stored on internal flash, or removable storage, or even striped across both similar to RAID0. The file system functions as a Virtual Unified Storage system.
WP7 will support SD cards, but the functionality is different now. The user data is striped across the SD card and the internal storage. This results in functionality similar to RAID0 - if a member disk is pulled from the set, the entire set ceases to function. Similarly, in WP7, if an SD card is pulled from a deployed device, the device will go into a "reduced functionality" mode - where you are only able to make emergency calls. Upon re-inserting the SD, the data is restored and the system functions normally as it would before the card was pulled. If the card or its data is not available (got corrupted, lost, eaten) - The phone must be "hard reset" to restore full functionality and all user data will be lost.
My guess is this was at least partly done as a method to lock down the security of marketplace apps.
I can see some advantages in this, in that it doesn't matter to a user whether it's on the memory card or on device, but will this completely screw up using the device as a USB storage device?
Thanks for the info! Would this have similar benefits of raid0 (increased performance w/sd card)? I guess if you want to upgrade your card it sounds like you'll have to give it a hard reset. That sounds like it could be a bit of an issue for many users. I wonder if, while it may allow support for an sd card, they may eventually only support non-removable cards because of that?
Makes me wonder why bother then? We all know that sd/micro/minis have a tendancy to corrupt after a year or so (depending on use) so surely its bloody pointless??
Just rely on the internal storage like iphone etc.
timmymarsh said:
Makes me wonder why bother then? We all know that sd/micro/minis have a tendancy to corrupt after a year or so (depending on use) so surely its bloody pointless??
Just rely on the internal storage like iphone etc.
Click to expand...
Click to collapse
I'd rather have it user removable such that it can be upgraded\expanded.
Also, if the card isn't constantly removed\inserted and is of a decent quality, then it'll probably last the life of the phone.
timmymarsh said:
Makes me wonder why bother then? We all know that sd/micro/minis have a tendancy to corrupt after a year or so (depending on use) so surely its bloody pointless??
Click to expand...
Click to collapse
I think that this is just a new requirement, and OEMs had been developing devices with SD cards, so it accomodates this fact.
TehPenguin said:
I'd rather have it user removable such that it can be upgraded\expanded.
Also, if the card isn't constantly removed\inserted and is of a decent quality, then it'll probably last the life of the phone.
Click to expand...
Click to collapse
But which is more reliable? built-in memory like iphone or SD cards?
For those of you interested in why they would want to use a MicroSD card inside the device instead of just soldering a flash chip on the board and the issues that can come with MicroSD, here's a great blog post on the topic.
because... of course we can all "simply" solder a flash chip on the PCB...
dazza9075 said:
because... of course we can all "simply" solder a flash chip on the PCB...
Click to expand...
Click to collapse
I was referring to the manufacturers. Read that blog post by a very, very, smart guy (he hacked the original xbox) and it will make sense.
Removable storage??
What do you mean removable storage? Last I heard it was all non removable?
Da_G said:
Windows Phone 7 represents a radical leap in the way the filesystem is presented to the user compared to WinMo. No longer will the user be able to access the true, underlying filesystem in any direct way - the OS will abstract the file system to a single view of all files - making no distinction between files stored on internal flash, or removable storage, or even striped across both similar to RAID0. The file system functions as a Virtual Unified Storage system.
WP7 will support SD cards, but the functionality is different now. The user data is striped across the SD card and the internal storage. This results in functionality similar to RAID0 - if a member disk is pulled from the set, the entire set ceases to function. Similarly, in WP7, if an SD card is pulled from a deployed device, the device will go into a "reduced functionality" mode - where you are only able to make emergency calls. Upon re-inserting the SD, the data is restored and the system functions normally as it would before the card was pulled. If the card or its data is not available (got corrupted, lost, eaten) - The phone must be "hard reset" to restore full functionality and all user data will be lost.
My guess is this was at least partly done as a method to lock down the security of marketplace apps.
Click to expand...
Click to collapse
Hi ..
Im just want to know if My HTC HD2 can run Win Mo 7 ?
Da_G said:
WP7 will support SD cards, but the functionality is different now. The user data is striped across the SD card and the internal storage. This results in functionality similar to RAID0 - if a member disk is pulled from the set, the entire set ceases to function. Similarly, in WP7, if an SD card is pulled from a deployed device, the device will go into a "reduced functionality" mode - where you are only able to make emergency calls. Upon re-inserting the SD, the data is restored and the system functions normally as it would before the card was pulled. If the card or its data is not available (got corrupted, lost, eaten) - The phone must be "hard reset" to restore full functionality and all user data will be lost.
Click to expand...
Click to collapse
Is there anything which indicates how large of an SD card WP7 can use? Apparently initially phones will only come with 8 GB of memory, and that on an internal card. That seems way too small if you wanted to store music and videos.Would it concievably be possible, as soon as you bought the phone, before anything additional is loaded, to pull the card, copy everything to a 32 GB card and reinsert it?
MHC48 said:
Is there anything which indicates how large of an SD card WP7 can use? Apparently initially phones will only come with 8 GB of memory, and that on an internal card. That seems way too small if you wanted to store music and videos.Would it concievably be possible, as soon as you bought the phone, before anything additional is loaded, to pull the card, copy everything to a 32 GB card and reinsert it?
Click to expand...
Click to collapse
8GB is the minimum spec. There will certainly be devices with larger amounts of storage. It should support at least 32GB.
How is this a performance benefit if most consumer SDs are rated Class 2 (i.e dog slow) and many people prefer to be able to swap cards at will? Class 6 cards are usually pretty expensive, and swapping SD cards on-the-fly is not uncommon...
timmymarsh said:
We all know that sd/micro/minis have a tendancy to corrupt after a year or so (depending on use) so surely its bloody pointless??
Click to expand...
Click to collapse
We do? I've never had a flash card go bad.
adamw79 said:
What do you mean removable storage? Last I heard it was all non removable?
Click to expand...
Click to collapse
WM7 phones will have an external storage card slot but it will become apart of the internal drive and not be used in the since of what we currently use it. when an external sd is inserted it is formatted to becomes part of the main internal drive something like a raid system so if you pull out the sd card phone will not boot until you put it back in, and i do believe this is also the same if you replace the card you might have to hard reset to get the phone to work.
A fred has a test device with 40g (8 internal and a 32g SD card)
You can access the filesystem with the "Remote Tools Framework" along with a filesystem plugin that wraps the Sirep services.
The sirep background services must be running on the device. Unfortunately these need to be flashed in or inserted via imageupdate.
Sirep is the sucesssor of rapi. Some tools include wpget, wpput, wprun etc.
Da_G said:
if a member disk is pulled from the set, the entire set ceases to function ......... Upon re-inserting the SD, the data is restored and the system functions normally as it would before the card was pulled. If the card or its data is not available (got corrupted, lost, eaten) - The phone must be "hard reset" to restore full functionality and all user data will be lost.
Click to expand...
Click to collapse
So, that being said.
Whilst Its a well known fact that "external media" such as Micro SD cards will not be user accessable, would it be possible to manually replace the cards?
For example, if a user dared to dismantle his/her device to access the card.
Then remove it, copy the partition on there to a larger piece of media, extend the partition to fill the card & then place that back before re-constructing the rest of the device.
Do you know if that could work, or are there measures put into place which prevent this? I guess some manufacturers may glue cards in, but that can be got around. I mean software wise, would doing this mess up the opperation of the device?
If that wouldnt work, then how about simply replacing the card & doing a hard reset? Any idea if it would simply accomodate the new card?
Im just trying to think of work-arounds as I know many people will be dissapointed with the variety of 8GB devices out there.
cris_rowlands said:
So, that being said.
Whilst Its a well known fact that "external media" such as Micro SD cards will not be user accessable, would it be possible to manually replace the cards?
For example, if a user dared to dismantle his/her device to access the card.
Then remove it, copy the partition on there to a larger piece of media, extend the partition to fill the card & then place that back before re-constructing the rest of the device.
Do you know if that could work, or are there measures put into place which prevent this? I guess some manufacturers may glue cards in, but that can be got around. I mean software wise, would doing this mess up the opperation of the device?
If that wouldnt work, then how about simply replacing the card & doing a hard reset? Any idea if it would simply accomodate the new card?
Im just trying to think of work-arounds as I know many people will be dissapointed with the variety of 8GB devices out there.
Click to expand...
Click to collapse
From what I've heard, the last option there, with forcing a hard reset is likely to be the only one that works, but it should work. OEMs may well glue down the microSD cards though.
I think quite a few devices will be using microSD cards internally, as it lets you release 3 versions of a device with different storage sizes very easily (just slot in an 8GB, 16GB or 32GB uSD card and release it).
I also doubt there will be many only 8GB devices. I know we've only seen leaks of 8GB devices, but it makes sense to test on slightly cheaper hardware, and make sure the OS works on the bare minimum of hardware.

SD Card keeps becoming unavailable

Has anyone else come across the problem where the micro SD card seems to just stop being available to the phone? I'd say maybe once or so a day, anything that reads data from the SD card, such as the music app, stop working. If I try and play a song, it just hangs and does nothing.
I tried a search and somebody in the G1 forum had a similar problem but it didn't really contain any conclusions on what it is likely to be.
Anyone else had this issue? What is it most likely to be, the phone or card?
Thanks.
yeah I've had this occasionally with the camerea and seperately the 3d gallery software I installed.. have no idea why
Yea I've had that a couple of times actually. Just have to turn it off and on again and its ok, but its annoying.
Yeah, rebooting does sort it out, but it's starting to happen every day now, sometimes a couple times a day. If it's just a dodgy card or whatever I'd rather get T-Mobile to sort it sooner rather than later.
hmm a dodgy card.. included with the phone, that sucks
Backup your SD Card data and then try formatting it to see if that helps.
Cheers, will give that a go tomorrow. I might ring up T-Mob tomorrow anyway just to make them aware of the issue I'm having.
If I format it, will I be able to copy all the contents back on to it?
aljwatson69 said:
Cheers, will give that a go tomorrow. I might ring up T-Mob tomorrow anyway just to make them aware of the issue I'm having.
If I format it, will I be able to copy all the contents back on to it?
Click to expand...
Click to collapse
Yes, back it up to hard drive on your PC, then after you have formatted your SD card, copy back the contents from the hard drive to your Removable disk (SD card).
I've had this a few times Took the card out, reinserted and restarted the phone. Seemed to fix it, but it is annoying.
Sorry I can't remember when and how I know this.
But backup the card on your PC
Then format it in/with the phone and this should solve the problem I believe
I had killed one of my 16 GB card in Nexus one.
I found a problem that if i use Win 7 or Vista i must remove the device by using safely remove the USB device. Since now am doing this way i never had any problem.
Word of warning you could simply kill a card if you just remove a device.
My first thought was it has something to do with the USB connection. If you safely remove device in Windows - the phone 'prepares' the SD card.
I was having the same issue. I connected to the PC and mounted the SD card. I performed a disk check on the card and it found some errors which it then repaired. I then unmounted the card
I haven't had any issues since.
I formatted my card yesterday and haven't had any problems so far. thanks for the advice.
I ended up replacing the card. All of the previous advice didn't work for me or if it did it didn't last. I reckon there was a bit of a dodgy batch supplied by SanDisk.
~Since replacing I've had absolutely no problems whatsoever, it used to happen at least every 48hours. Very annoying when you try to take a photo and it tells you there's nowhere to save it.
I've been having problems too when taking pictures, which is really annoying!
And i'm not sure whether this is a related problem or not, but it could be...when trying to receive a file over bluetooth it sometimes says it doesn't have permission to receive the file or something along those lines, could this be the SD card playing up?
I'm on T Mobile, would they replace the SD card?
Not sure if it is the same reason, but I had all kinds of problems including the one you've described.
I'm on Orange, they told me that my SD card wasn't covered by Orange Care (the orange phone insurance). I said I didn't have Orange Care anyway and that surely it comes under the 12 months manufacturers warranty. They said pop it into the shop which is a bit of a drive and would cost me more than the value of a new card to get there.
At the time I wasn't certain it was the card as I didn't have a 2nd to try it with. Given my problem was very intermittent I decided the bother of going into the shop - it wasn't worth it for a £5 card. Now that I've bought a new one that works perfectly, I'm going to head into the shop with the old one next time I'm passing. The problem is I don't really need it replacing now! You could always lie and tell them you've tried your friends card at home for a couple of days and it worked perfectly?! No harm in trying.
hassan said:
I had killed one of my 16 GB card in Nexus one.
I found a problem that if i use Win 7 or Vista i must remove the device by using safely remove the USB device. Since now am doing this way i never had any problem.
Word of warning you could simply kill a card if you just remove a device.
Click to expand...
Click to collapse
Mhh - maybe I've had luck, but I use my over 1 year old 8gb cl6 card from magic/mt3g and never use that win function while unpluging anything (not while data transfer). So maybe depends on quality or manufacturer?
Sent from my HTC Desire
2-3 weeks since I've formatted my card and now I'm carefully unpluging my phone only when it's charging it hasn't happened ever since
Zilch said:
I've had this a few times Took the card out, reinserted and restarted the phone. Seemed to fix it, but it is annoying.
Click to expand...
Click to collapse
I hate to say it, but it will happen again. Have card reader or other phone prepared, just in case your sd card stops working totally

Tablet destroying SD cards?

In August, I bought a 128GB PNY microSD card. It lasted almost two months, and then the tablet started acting funny. It would randomly unmount the card, it couldn't find my music files, and apps I had moved to the card would just disappear. I assumed the card was broken, so I eventually replaced it with a 128GB Samsung card. It's worked fine until the other day, when it started exhibiting the exact same behavior. I haven't been able to fix it.
I've tried formatting them both, but nothing seems to work. Windows can see the cards and the contents, but it's not able to format either card - it reads them both as write-protected, even though they're not. The only thing I can think that might cause it besides my tablet is Link2SD. I use this to move the large app data to the card since I only have 16GB of regular space. Could this be causing it? I'm at a loss, and I can't keep buying new cards. Any help would be greatly appreciated!
I regularly read this forum and this is the first time I've heard of an issue as described. I bought a a cheaper 64Gb mSD card and used it with my Tab S day one. I've never had an issue. Could be you just have been unlucky? Were your cards from recognized brands? I suspect that the larger GB cards have lower yields so you need to buy a better quality card.
Sent from my SM-T800 using XDA Premium HD app
3DSammy said:
I regularly read this forum and this is the first time I've heard of an issue as described. I bought a a cheaper 64Gb mSD card and used it with my Tab S day one. I've never had an issue. Could be you just have been unlucky? Were your cards from recognized brands? I suspect that the larger GB cards have lower yields so you need to buy a better quality card.
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I definitely won't rule out being unlucky, it's definitely in my blood. I just find it odd the exact same thing would happen to two cards, months apart and with different brands and purchasing locations. PNY isn't super awesome, but they're not garbage, and Samsung is fairly prominent.
Samsung phones and tablets are occasionally said to be sd card killers. The GS3 definitely was, killed like 3 cards with the same result as you got.
Sometimes I feel it also affects certain sizes of card. The GS3 ate 16gb cards, but not 32gb cards. So it's quite possible that a different size card may have a longer life.
Not saying this has any base in research, just my experience.
Andante1980 said:
Samsung phones and tablets are occasionally said to be sd card killers. The GS3 definitely was, killed like 3 cards with the same result as you got.
Sometimes I feel it also affects certain sizes of card. The GS3 ate 16gb cards, but not 32gb cards. So it's quite possible that a different size card may have a longer life.
Not saying this has any base in research, just my experience.
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Click to collapse
I've read this on other forums as well, specifically the GS3 part. I wish there was a way to be sure. What happened to destroy the cards?
I am using a Samsung 64GB and Link2SD. Haven't encountered any issue so far. But on a related topic, I managed to destroy a 1 year old Sandisk USB drive yesterday while trying to format it as NTFS. Now Windows won't recognise it al all. It could just be that the flash memory had defects to begin with.
Does Windows make the bell sound when you insert your microsd, if it does you should be able to recover it, if it does not and you have checked the reader is working the microsd might be dead, if you have an sdhc adapter see if a camera or any other device will recognize the card, if it does format it in that device then see if windows will see it, I had an 16GB microsd a few years ago completely die when i froze while i was copying music to my phone, nothing would recognize the card after that it was totally dead, and i got a refund.
john.
snapper.fishes said:
I am using a Samsung 64GB and Link2SD. Haven't encountered any issue so far. But on a related topic, I managed to destroy a 1 year old Sandisk USB drive yesterday while trying to format it as NTFS. Now Windows won't recognise it al all. It could just be that the flash memory had defects to begin with.
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Click to collapse
Tinderbox (UK) said:
Does Windows make the bell sound when you insert your microsd, if it does you should be able to recover it, if it does not and you have checked the reader is working the microsd might be dead, if you have an sdhc adapter see if a camera or any other device will recognize the card, if it does format it in that device then see if windows will see it, I had an 16GB microsd a few years ago completely die when i froze while i was copying music to my phone, nothing would recognize the card after that it was totally dead, and i got a refund.
john.
Click to expand...
Click to collapse
Windows does recognize the card, and I can see the contents of it and copy all content OFF the card. However, trying to format it just tells me the disk is write protected. I've done everything in my power to try to unlock the disk, including third-party programs and commands in the DOS prompt, but it's still write-protected. So bizarre!
I had the write protect problem on an card myself a few years ago, I downloaded an app that let me remove the protection and the card worked fine after that.
Does the write protection stop a camera from formatting the card, or only windows, as i said it`s been years since i had my problem.
Have you tried a partition manger app, I have used the one below for years, but i dont know if it will be blocked by the write protection as well.
http://www.partitionwizard.com/free-partition-manager.html
John.
greycobalt said:
Windows does recognize the card, and I can see the contents of it and copy all content OFF the card. However, trying to format it just tells me the disk is write protected. I've done everything in my power to try to unlock the disk, including third-party programs and commands in the DOS prompt, but it's still write-protected. So bizarre!
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Click to collapse
Tinderbox (UK) said:
I had the write protect problem on an card myself a few years ago, I downloaded an app that let me remove the protection and the card worked fine after that.
Does the write protection stop a camera from formatting the card, or only windows, as i said it`s been years since i had my problem.
Have you tried a partition manger app, I have used the one below for years, but i dont know if it will be blocked by the write protection as well.
http://www.partitionwizard.com/free-partition-manager.html
John.
Click to expand...
Click to collapse
I actually don't own a camera, the only things I have that take SD cards are computers and Android tablets/phones. I haven't tried that particular partition manager (Chrome won't let me download it - it says it's unsafe?), but the Windows manager and an HP one someone recommended both say "Failed to format disk."
I have uploaded the app i used, It years old so i most likely does not work but you can give it a try.
John.
greycobalt said:
I actually don't own a camera, the only things I have that take SD cards are computers and Android tablets/phones. I haven't tried that particular partition manager (Chrome won't let me download it - it says it's unsafe?), but the Windows manager and an HP one someone recommended both say "Failed to format disk."
Click to expand...
Click to collapse
greycobalt said:
I actually don't own a camera, the only things I have that take SD cards are computers and Android tablets/phones. I haven't tried that particular partition manager (Chrome won't let me download it - it says it's unsafe?), but the Windows manager and an HP one someone recommended both say "Failed to format disk."
Click to expand...
Click to collapse
I would download partition wizard with another browser or force chrome to download it. Its a perfectly legitimate app which I've used many a time.
You need a low level format and partitioning software like that. Windows is useless on its own.
Delete the sd card partition, recreate and reformat.
ashyx said:
I would download partition wizard with another browser or force chrome to download it. Its a perfectly legitimate app which I've used many a time.
You need a low level format and partitioning software like that. Windows is useless on its own.
Delete the sd card partition, recreate and reformat.
Click to expand...
Click to collapse
I downloaded it through Edge, and everything worked fine. It even seemed like it was going to work, until I hit "apply". Then it sat and thought for a while, and told me there was an error with the format of the disk. Instead of trying to recreate 2 partitions, I tried to just see if it would format at all, and when I applied that change, it said it completed successfully, but the disk was still in it's former state - full of my files, fully readable, and definitely not formatted. I feel like this stupid thing is haunted.
So for this problem, can anyone give me an opinion on whether it's hardware or software based? Such as, do you believe this is happening because it's a Samsung tablet, or with a bug on their current Android version? I'm hesitant to keep putting cards in it, but I want to use my tablet!
Have you flashed or rooted your tablet? , are you on kitkat or lollipop?
Tinderbox (UK) said:
Have you flashed or rooted your tablet? , are you on kitkat or lollipop?
Click to expand...
Click to collapse
It was rooted, but it was on stock 5.0.2. I used root to run Link2SD.
Link2SD only moves apps not music, so why did your music disappear, have you used any cleaning apps as they can delete files that you want to keep.
greycobalt said:
It was rooted, but it was on stock 5.0.2. I used root to run Link2SD.
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Click to collapse
Tinderbox (UK) said:
Link2SD only moves apps not music, so why did your music disappear, have you used any cleaning apps as they can delete files that you want to keep.
Click to expand...
Click to collapse
Well I had Link2SD moving all kinds of crap. It was linking games, books, comics, magazines...lots of stuff. My music didn't disappear - in fact, nothing did. It's all still there, only the tablet can't see it. My computer can see it, I can copy and open the files, but I can't write anything new to the card, and I can't format it.
It sounds like your tablet is loosing the location of the files on your microsd, I would say Link2SD is at fault, I would give the developer a email with the problem your are having and see what they say.
EDIT: I just read the reviews of LINK2SD and some people are reporting files are disappearing.
John.
greycobalt said:
Well I had Link2SD moving all kinds of crap. It was linking games, books, comics, magazines...lots of stuff. My music didn't disappear - in fact, nothing did. It's all still there, only the tablet can't see it. My computer can see it, I can copy and open the files, but I can't write anything new to the card, and I can't format it.
Click to expand...
Click to collapse
greycobalt said:
Well I had Link2SD moving all kinds of crap. It was linking games, books, comics, magazines...lots of stuff. My music didn't disappear - in fact, nothing did. It's all still there, only the tablet can't see it. My computer can see it, I can copy and open the files, but I can't write anything new to the card, and I can't format it.
Click to expand...
Click to collapse
@greycobalt: I recently had Link2SD card stop mounting the 2nd partition (formatted as ext2, that is used for Link2SD).
I'm using a SanDisk 64 GB micro SD.
1) Did you have this same problem? Were you able to recover your app files when you put the SD card into your computer?
2) Oddly enough, I can see the files on the 1st partition of the card, which is formatted to FAT32 and I can see everything on that in file explorer. You said that these even disappear?
3) What file format did you have for your microSD for Link2SD to be able to link apps to it?

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