Develop Bugs

SD card keep get in corrupted

My keep getting corrupted
Sent from my SGH-T989 using xda app- app

don728871 said:
My keep getting corrupted
Sent from my SGH-T989 using xda app- app
Click to expand...
Click to collapse
me too. I would like to know how to recover data from it if anyone knows.

I've had this issue ever since upgrading to ICS. It will say sd unexpectedly removed, or corrupted sd card a few times per day. Tried a new sd card, and got a replacement phone from T-Mobile..still does it on every Rom I use. Quite annoying. But, I have found that taking out my battery and holding the power button for a few seconds to drain all the juice out seems to bring it back.
Sent from my SGH-T989 using xda premium

It means that the sd card is formatted to something that its not supported by the phone. I had this problem before, save all the data on your computer, make a folder and name it sd backup. then on the phone do a factory format only on the sdcard. or you can do it on recovery, it will format the sdcard too. then move all your stuff back from the computer and you're good to go

Dude I tried NTFS ext4 and fat32
Sent from my SGH-T989 using xda app-developers app

Have you tried to use the sd card on another phone? or on your computer

gypsy214 said:
Have you tried to use the sd card on another phone? or on your computer
Click to expand...
Click to collapse
I like an app that
Sent from my SGH-T989 using xda app-developers app

I have this same issue and I run the stock rom. Has happened on 2 different cards now, with the last one making the card appear unformatted. I have to use data recovery software now to get all my stuff back. I'm thinking about getting my phone replaced as it's a couple weeks from 1 year old.

turbodroid said:
I have this same issue and I run the stock rom. Has happened on 2 different cards now, with the last one making the card appear unformatted. I have to use data recovery software now to get all my stuff back. I'm thinking about getting my phone replaced as it's a couple weeks from 1 year old.
Click to expand...
Click to collapse
it happened to me again while i was restoring apps after loading a different rom. this time, i put it in a card reader and ran chkdsk /r on it, and all my files reappeared. so i back it up this time. i am not sure why it happens so much.

i had this with one of my sdcard not long ago. i copied all the data from the sdcard to my computer and formatted the sdcard using another phone and put the data back on it and never had an issue since. i probably could have used the s2 to format while i was troubleshooting but it got fixed before i could try.

don728871 said:
My keep getting corrupted
Sent from my SGH-T989 using xda app- app
Click to expand...
Click to collapse
This happened to mine too. Well sorta, I can see my files, but I can't add or delete stuff off of it when connected to the computer. idk what else to do, maybe buy a new sd card.

hitech456 said:
This happened to mine too. Well sorta, I can see my files, but I can't add or delete stuff off of it when connected to the computer. idk what else to do, maybe buy a new sd card.
Click to expand...
Click to collapse
If you can save all your files to computer then let the computer format sd card to default fat32 not ntfs. Then move files back to sd card and it should fix the problem. I have done this method several times and it worked for me.

New SD card

I just bought a new class 10 16gb SD card. What should I do? I want to put all my files at the previous SD card into it. I currently using cm 10 build 4.1. Thanks
Sent from my GT-I8150 using xda app-developers app

Turn off your phone.
Eject the card.
Copy *all* files within the old card into the new card.
Insert the new card.
Done

pepoluan said:
Turn off your phone.
Eject the card.
Copy *all* files within the old card into the new card.
Insert the new card.
Done
Click to expand...
Click to collapse
Thx

SanDisk 16GB microSDHC Memory Card Ultra Class 10 UHS-I with microSD Adapter
Hello mates, greetings from Turkey.
i bought the following sd card and start using it in my i8150. However phone freezes / thinks a lot almost everytime when it starts using this SD i.e. during startup, previewing gallery, etc.
is this a known issue or something fixable?
here is the link of my new SD.

cozgun said:
Hello mates, greetings from Turkey.
i bought the following sd card and start using it in my i8150. However phone freezes / thinks a lot almost everytime when it starts using this SD i.e. during startup, previewing gallery, etc.
is this a known issue or something fixable?
here is the link of my new SD.
Click to expand...
Click to collapse
Greetings from Greece too..
Maybe you have a "fake" or a faulty SD card. Try another and post results..

yannis_gr said:
Greetings from Greece too..
Maybe you have a "fake" or a faulty SD card. Try another and post results..
Click to expand...
Click to collapse
i am sure it is not fake, but might be faulty.
i have no prob. with an old version 16 GB sd.
anyway, i will try the new card in another phone, then let you know the result.

cozgun said:
Hello mates, greetings from Turkey.
i bought the following sd card and start using it in my i8150. However phone freezes / thinks a lot almost everytime when it starts using this SD i.e. during startup, previewing gallery, etc.
is this a known issue or something fixable?
here is the link of my new SD.
Click to expand...
Click to collapse
maybe you're copying a lot of files into your sdcard and some of it maybe a corrupt files.
try to format it again and put only the files you needed.
Sent from my GT-I8150 using xda

stpdkid said:
maybe you're copying a lot of files into your sdcard and some of it maybe a corrupt files.
try to format it again and put only the files you needed.
Sent from my GT-I8150 using xda
Click to expand...
Click to collapse
for an exact solution, i formatted everything (phone, internal sd, external sd by following the "go pristine" procedure).
then put the new update zip files to re-install the rom, open the phone in CWM mod.
CWM saw the contents of the ext.sd and i started installing zip file.
CWM was saying that it is installing the zip, however it was doing nothing as there were no further progress of installation.
at that point i figured out that my phone and my new sdhc class 10 ext.sd card are not able to communicate in a healthy way.
card is working in laptop, but has trouble working in the phone. most probably card was corrupted at the first stage while i am buying iti from store.
so i am giving up this.
just fyi.

cozgun said:
for an exact solution, i formatted everything (phone, internal sd, external sd by following the "go pristine" procedure).
then put the new update zip files to re-install the rom, open the phone in CWM mod.
CWM saw the contents of the ext.sd and i started installing zip file.
CWM was saying that it is installing the zip, however it was doing nothing as there were no further progress of installation.
at that point i figured out that my phone and my new sdhc class 10 ext.sd card are not able to communicate in a healthy way.
card is working in laptop, but has trouble working in the phone. most probably card was corrupted at the first stage while i am buying iti from store.
so i am giving up this.
just fyi.
Click to expand...
Click to collapse
May I ....... You Must Format that SD with FAT32 mod .... try to format it on your laptop then put it in your mobile it Will work ... Try that now

ElGzzar said:
May I ....... You Must Format that SD with FAT32 mod .... try to format it on your laptop then put it in your mobile it Will work ... Try that now
Click to expand...
Click to collapse
Already did that before re-install attempt. I am attaching the formatting properties i used.

i think the (Allocation unit size) should be Default or 4096

ElGzzar said:
i think the (Allocation unit size) should be Default or 4096
Click to expand...
Click to collapse
Hi,
here is what i did last hour.
formatted again in "default" format and tried to re-install rom from ext.sd.
During first attempt, attached screen does not changed for 30 minutes, so i gave up again and force to shut down the phone by pressing down power button for 8 seconds.
I thought the phone will shut down only, but it restared in CWM mode. Then i gave another try and this time phone processed the zip file.
so far no new problems but let you know in case of one.

use that Rom RemICS 1.7
and here it's the Link: http://d-h.st/xwI

cozgun said:
Hi,
here is what i did last hour.
formatted again in "default" format and tried to re-install rom from ext.sd.
During first attempt, attached screen does not changed for 30 minutes, so i gave up again and force to shut down the phone by pressing down power button for 8 seconds.
I thought the phone will shut down only, but it restared in CWM mode. Then i gave another try and this time phone processed the zip file.
so far no new problems but let you know in case of one.
Click to expand...
Click to collapse
have you try to format using minitool partition or gparted?

No. Did not try gparted. Will try it later.
Sent from my GT-I8150 using xda app-developers app
---------- Post added at 08:12 AM ---------- Previous post was at 08:04 AM ----------
Here is new situtation:
Phone sometimes loosing connection to ext.sd especially When i try to open a video from ext.sd.
Looks like my ext.sd has defect since it departed from the factory.
Lastly i will try a new format via gparted and if it fails again to work properly i will use it in my laptop only.
Sent from my GT-I8150 using xda app-developers app

Need help ASAP

A little while back I posted a thread asking the following.
"Just recently rooted my friend's GN2, I transfered the files to the SD card and went into CWM recovery. I'm having 2 issues.
1: The phone says there's not enough room to make a backup when there clearly is. I have about 2 gigs on the internal, but but it either says I have 3mb of free space or 0.
2: I click 'install from SD' and the only file it sees is "-clockworkmod/ ".
What am I doing wrong? I personally have an S2 and it's very similar but these two things are preventing me from flashing any rom"
The only person to respond recommended I format the sd card so I did so. However the phone still did not recognize any files in the sd card so I couldn't flash any rom. Upon startup it began boot looping and the phone is no longer activated? It can't make calls or send texts and reboots every minute upon ' failed activation'. The phone currently is useless. I'm not new to flashing roms I've been doing it for years but this is the first time I'm stumped thanks to some bad advice (not blaming that person) and it's not even my phone. Luckily I just got an htc one and I could give my friend the my s2 until the problem is fixed...any ideas how to fix it? Or unroot at least to bring in for repair?
Sent from my HTCONE using xda app-developers app

Any replies would be appreciated.. I'd like to get his phone functioning as soon as I can
Sent from my HTCONE using xda app-developers app

Try using twrp instead. Sorry I couldny be more help. But I have never used cwm on this phone since I got it. Only twrp. You can find it in original dev section.
Sent from my SPH-L900 using Tapatalk 2

Yes use twrp. Find the latest version and flash it in clockwork. I havent used cwm since my og evo lol.

Maybe I'm old school but I'm a long time flasher and I've always just been more comfortable with cwm. But I'm not so sure it's a kernel issue?
Edit: and the issue is that I can't flash anything because I can't store anything on the sd card. I'm thinking of odining to a stock build?
Sent from my HTCONE using xda app-developers app

The only thing I can suggest is doing a quick format on the SD card to FAT32, especially if the card is a 64 GB card. Also, some Sandisk 64 GB cards were bad from the factory, so check that too. Finally, if all else fails, try breaking the phone even more to the point it won't even boot and get a replacement.

smmiller506 said:
The only thing I can suggest is doing a quick format on the SD card to FAT32, especially if the card is a 64 GB card. Also, some Sandisk 64 GB cards were bad from the factory, so check that too. Finally, if all else fails, try breaking the phone even more to the point it won't even boot and get a replacement.
Click to expand...
Click to collapse
What would be my excuse for the phone not booting?
Sent from my HTCONE using xda app-developers app

MultiLockOn said:
What would be my excuse for the phone not booting?
Sent from my HTCONE using xda app-developers app
Click to expand...
Click to collapse
Don't come up with one. Just take it in and show them. Before you take it in, if you can, try to reset the flash counter. If they can check that and see it isn't correct, you're in trouble. If it's reset or it can't be checked, then take it in.

MultiLockOn said:
Maybe I'm old school but I'm a long time flasher and I've always just been more comfortable with cwm. But I'm not so sure it's a kernel issue?
Edit: and the issue is that I can't flash anything because I can't store anything on the sd card. I'm thinking of odining to a stock build?
Sent from my HTCONE using xda app-developers app
Click to expand...
Click to collapse
i was too, but i got over it. twrp rules, really, it does.
smmiller506 said:
The only thing I can suggest is doing a quick format on the SD card to FAT32, especially if the card is a 64 GB card. Also, some Sandisk 64 GB cards were bad from the factory, so check that too. Finally, if all else fails, try breaking the phone even more to the point it won't even boot and get a replacement.
Click to expand...
Click to collapse
smmiller506 said:
Don't come up with one. Just take it in and show them. Before you take it in, if you can, try to reset the flash counter. If they can check that and see it isn't correct, you're in trouble. If it's reset or it can't be checked, then take it in.
Click to expand...
Click to collapse
this crap? only last resort. (man, you must have one pissed off friend.)
seriously, ODIN something. stock it.
if you're not really familiar with samsung stuff, do a bit of reading. perhaps a pit file might be needed. garwynn and sextape have some good threads on this.

Thanks guys. I'll try some things today and check back
Sent from my HTCONE using xda app-developers app

MultiLockOn said:
A little while back I posted a thread asking the following.
"Just recently rooted my friend's GN2, I transfered the files to the SD card and went into CWM recovery. I'm having 2 issues.
1: The phone says there's not enough room to make a backup when there clearly is. I have about 2 gigs on the internal, but but it either says I have 3mb of free space or 0.
2: I click 'install from SD' and the only file it sees is "-clockworkmod/ ".
What am I doing wrong? I personally have an S2 and it's very similar but these two things are preventing me from flashing any rom"
The only person to respond recommended I format the sd card so I did so. However the phone still did not recognize any files in the sd card so I couldn't flash any rom. Upon startup it began boot looping and the phone is no longer activated? It can't make calls or send texts and reboots every minute upon ' failed activation'. The phone currently is useless. I'm not new to flashing roms I've been doing it for years but this is the first time I'm stumped thanks to some bad advice (not blaming that person) and it's not even my phone. Luckily I just got an htc one and I could give my friend the my s2 until the problem is fixed...any ideas how to fix it? Or unroot at least to bring in for repair?
Sent from my HTCONE using xda app-developers app
Click to expand...
Click to collapse
Ok...what files did you transfer to the sd card? Was it the internal or external? Even 2 gigs on the internal for a backup may not be enough. I have a backup that is just over 3 gigs. As far as formatting your external sd what did you do ? Fat32? Personally TWRP is the way to go. Try to format fat 32, download a stock rooted TW rom and put on external sd, also dl TWRP recovery to external sd. Boot into cwm recovery and try to flash twrp. If that works out pull battery put back in volume up+home+power. Hopefully that gets you to twrp, if so go to wipe then factory reset. If you click on advanced it will let you wipe system which couldn't hurt. After that, back arrow on bottom of screen to twrp home screen. Click install...choose external then locate where rom is...hopefully on root of external and see if that helps.
Oh and was the phone activated prior to flashing?
Android...A New Digital Revolution Of Incredible Developers...

Please do the following:
01). Format the SD card to FAT32 (NOT EXFAT OR NTFS) on ANOTHER computer and do NOT use the built in windows format options. Use a third party tool like guiformat.exe and do NOT USE QUICK FORMAT. (With my current sd card, windows format failed, guiformat.exe partially failed(and by failed I mean formatted fine but caused problems being seen) but I installed and used eausus partition master to regular format it to fat32 and followed the next few steps and its been working fine ever since.
02). Immediately after formatting the SD card slow format to fat32 in easus partition master create a text file on the sd card in its root directory (I've had an issue before where my SD card would not be seen or writable by certain devices if the root directory was 100% empty), before you copy any further files insert the SD card into the phone and use your recovery kernel(CWM/TWRP) to navigate to the root directory of the sd card and insure that you can in fact see the text file you created, POWER OFF THE PHONE(or alternatively unmount it in android terminal if possible) before removing or inserting the SD card(also always eject from the PC before removing, do not just rip it out off the usb slot/card reader), insert the SD card back into your PC/card reader and copy TWRP to the sd card.
03). Boot back into your current recovery and Install TWRP(if it's not already) you may prefer CWM but TWRP just causes people a lot less bugs in general.
04). Verify in the backup section of TRWP that you have explicitly selected external storage as the backup location and given the backup a name, as internal storage is selected by default, and you very well may not have enough free internal storage for the backup, regardless of whatever reasons you think you should.
05). Its probably a good idea to turn off md5 verification of the backup, I do this every time, the one time I did try to verify a backup with an md5 checksum it failed, I unchecked this option backed up restored to it and all was fine(and still is), also a good idea to uncheck md5 when installing roms/kernels/apk's as most don't have md5.
05). If the above does not work you probably have a bad SD card, try another and post back here.

ianmb said:
Ok...what files did you transfer to the sd card? Was it the internal or external? Even 2 gigs on the internal for a backup may not be enough. I have a backup that is just over 3 gigs. As far as formatting your external sd what did you do ? Fat32? Personally TWRP is the way to go. Try to format fat 32, download a stock rooted TW rom and put on external sd, also dl TWRP recovery to external sd. Boot into cwm recovery and try to flash twrp. If that works out pull battery put back in volume up+home+power. Hopefully that gets you to twrp, if so go to wipe then factory reset. If you click on advanced it will let you wipe system which couldn't hurt. After that, back arrow on bottom of screen to twrp home screen. Click install...choose external then locate where rom is...hopefully on root of external and see if that helps.
Oh and was the phone activated prior to flashing?
Android...A New Digital Revolution Of Incredible Developers...
Click to expand...
Click to collapse
There is
no external sd card in the phone. Just a 16g internal, and I've wiped pretty much everything so there shouldn't be a problem with room. I'll go out and buy an external and attempt to flash something.
garymaurizi said:
Please do the following:
01). Format the SD card to FAT32 (NOT EXFAT OR NTFS) on ANOTHER computer and do NOT use the built in windows format options. Use a third party tool like guiformat.exe and do NOT USE QUICK FORMAT. (With my current sd card, windows format failed, guiformat.exe partially failed(and by failed I mean formatted fine but caused problems being seen) but I installed and used eausus partition master to regular format it to fat32 and followed the next few steps and its been working fine ever since.
02). Immediately after formatting the SD card slow format to fat32 in easus partition master create a text file on the sd card in its root directory (I've had an issue before where my SD card would not be seen or writable by certain devices if the root directory was 100% empty), before you copy any further files insert the SD card into the phone and use your recovery kernel(CWM/TWRP) to navigate to the root directory of the sd card and insure that you can in fact see the text file you created, POWER OFF THE PHONE(or alternatively unmount it in android terminal if possible) before removing or inserting the SD card(also always eject from the PC before removing, do not just rip it out off the usb slot/card reader), insert the SD card back into your PC/card reader and copy TWRP to the sd card.
03). Boot back into your current recovery and Install TWRP(if it's not already) you may prefer CWM but TWRP just causes people a lot less bugs in general.
04). Verify in the backup section of TRWP that you have explicitly selected external storage as the backup location and given the backup a name, as internal storage is selected by default, and you very well may not have enough free internal storage for the backup, regardless of whatever reasons you think you should.
05). Its probably a good idea to turn off md5 verification of the backup, I do this every time, the one time I did try to verify a backup with an md5 checksum it failed, I unchecked this option backed up restored to it and all was fine(and still is), also a good idea to uncheck md5 when installing roms/kernels/apk's as most don't have md5.
05). If the above does not work you probably have a bad SD card, try another and post back here.
Click to expand...
Click to collapse
Can't thank you enough for the post, I appreciate it. Parts if it are a little over my head (most of it actually) but I'll try and manage aha. I'm a little confused on step 1 in particular, how do I format the sd card to a computer? Is there a separate program I need that manages the phones memory temporarily through an external hard drive or...
Sent from my HTCONE using xda app-developers app

I think I might have misunderstood your original question I apologize. Those instructions relate to an external SD card
Il if you are treating the phone plugged into a computer via USB the same way you would treat an external microsd card you are making a huge mistske/misconcepyipn ..
I am at work right now so I can't help further but at this point you need to.find and follow the instructions to restore the phone back.to its stock state and start from.fresh. I will post back tonight with instructions to do that and the best way to root and custom recovery currently when I get home

garymaurizi said:
I think I might have misunderstood your original question I apologize. Those instructions relate to an external SD card
Il if you are treating the phone plugged into a computer via USB the same way you would treat an external microsd card you are making a huge mistske/misconcepyipn ..
I am at work right now so I can't help further but at this point you need to.find and follow the instructions to restore the phone back.to its stock state and start from.fresh. I will post back tonight with instructions to do that and the best way to root and custom recovery currently when I get home
Click to expand...
Click to collapse
Thanks. The problem is that the phone boot loops so fast that I can't stick anything on the internal. And the one time it was on long enough to, the phone still reads that there's no files there. It's why I'm in this mess in the first place, I don't know why it's not recognizing any files
Sent from my HTCONE using xda app-developers app

MultiLockOn said:
Thanks. The problem is that the phone boot loops so fast that I can't stick anything on the internal. And the one time it was on long enough to, the phone still reads that there's no files there. It's why I'm in this mess in the first place, I don't know why it's not recognizing any files
Sent from my HTCONE using xda app-developers app
Click to expand...
Click to collapse
If you wiped everything then you might have wiped the partitions by accident. Get an ext sd card put flashable rom on that then boot into your custom recovery and try flashing the ROM through that
Android...A New Digital Revolution Of Incredible Developers...

ianmb said:
If you wiped everything then you might have wiped the partitions by accident. Get an ext sd card put flashable rom on that then boot into your custom recovery and try flashing the ROM through that
Android...A New Digital Revolution Of Incredible Developers...
Click to expand...
Click to collapse
That seems like the best thing...won't the phone still rely on the internal sd card though and keep bootlooping?
Sent from my HTCONE using xda app-developers app

Odining back to stock is prooobably your best bet. No need to go through repair fees or restocking fees etc. When you can fix it in house.
Sent from my SPH-L900 using xda premium

It should not rely on the internal. Download mode is deep down in the bootloader. If you borked that then jtag or sending it to samsung/asurion is the only option.
Sent from my SPH-L900 using Tapatalk 2

MultiLockOn said:
That seems like the best thing...won't the phone still rely on the internal sd card though and keep bootlooping?
Sent from my HTCONE using xda app-developers app
Click to expand...
Click to collapse
Try a stock rooted rom and see if it works. Because it should at least give you the boot.img in the rom so you might be able to get past the boot screen. Hopefully it will re partition your phone. Im not for sure but its worth a shot.
Android...A New Digital Revolution Of Incredible Developers...

Phone Won't Mount SD Card

Last night I decided to restore my phone back to the stock ROM. I've completed this process countless times before without ever having this problem. I made my backups via Titanium and TWRP recovery. Since I had a lot of photos saved internally, I wanted to move them to my SD card before going back to the stock ROM since they would have been deleted. I used my file manager and MOVED folders containing the pictures that I wanted to save to my SD card. I think this is where my problem stems from. I probably should have copied the folders instead of just moving them. After the stock ROM loaded up I went through the introduction steps and afterwards I noticed the "Your SD card is safe to remove" notification. I went to settings to try and mount the SD card but the setting app ends up crashing. Thinking I made a mistake while going back to stock, I restored my phone back the ROM I was using my backup only to find out that the problem still persisted. The card can be mounted in windows and in recovery mode. I have no idea how to make my phone mount it normally though.

Since you restored stock and are having problems I would flash stock via Odin without the sdcard in the phone just to be sure.
Sent from my SPH-L900 using XDA Premium 4 mobile app

I just tried that and it still didn't mount. I should probably note that it's my 64GB SD card that cannot be mounted and my 16GB one can.

Fat32?
Sent from my SPH-L900 using XDA Premium 4 mobile app

Well then sounds like an issue might be with the format of the card. Try backing it up to pc then formatting it as a fat file system instead of exfat.
Sent from my SPH-L900 using XDA Premium 4 mobile app

I backed up everything from my SD card to my desktop and reformatted it as exFAT (since that's how I originally formatted it) and now my phone can mount it normally again. Still not sure what made it unrecognizable to my phone, but I'm glad I don't have to purchase a new 64GB SD card now. Thanks for helping guys. Much appreciated.

iLoveBBQRibs said:
I backed up everything from my SD card to my desktop and reformatted it as exFAT (since that's how I originally formatted it) and now my phone can mount it normally again. Still not sure what made it unrecognizable to my phone, but I'm glad I don't have to purchase a new 64GB SD card now. Thanks for helping guys. Much appreciated.
Click to expand...
Click to collapse
I still suggest using plain fat since exfat is not supported 100% by all roms/kernels. This could save you from issues later if you change from stock roms to custom roms.
Sent from my SPH-L900 using XDA Premium 4 mobile app

Suddenly Getting SD Card Unexpectedly Removed Error

Been working fine for over a month now all of a sudden the SD card appears to be randomly mounting/unmounting itself and has become unreadable on my phone.
I've put the SD card in my PC and it works fine so I suspect my phone has developed a fault. I hope I don't have to get an exchange as it's otherwise faultless and I'm dreading getting a unit that can't be S-Off'd
I haven't modified or installed anything prior to the fault developing,
Any tips would be most welcome.
PS It's a genuine Transcend Premium 300x 64GB bought from MyMemory.

stuart0001 said:
Been working fine for over a month now all of a sudden the SD card appears to be randomly mounting/unmounting itself and has become unreadable on my phone.
I've put the SD card in my PC and it works fine so I suspect my phone has developed a fault. I hope I don't have to get an exchange as it's otherwise faultless and I'm dreading getting a unit that can't be S-Off'd
I haven't modified or installed anything prior to the fault developing,
Any tips would be most welcome.
PS It's a genuine Transcend Premium 300x 64GB bought from MyMemory.
Click to expand...
Click to collapse
Is it exfat or fat 32
Sent from my HTC One_M8 using XDA Premium 4 mobile app

Android The Greek said:
Is it exfat or fat 32
Sent from my HTC One_M8 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
exfat

stuart0001 said:
Been working fine for over a month now all of a sudden the SD card appears to be randomly mounting/unmounting itself and has become unreadable on my phone.
I've put the SD card in my PC and it works fine so I suspect my phone has developed a fault. I hope I don't have to get an exchange as it's otherwise faultless and I'm dreading getting a unit that can't be S-Off'd
I haven't modified or installed anything prior to the fault developing,
Any tips would be most welcome.
PS It's a genuine Transcend Premium 300x 64GB bought from MyMemory.
Click to expand...
Click to collapse
so are you on stock? if so have you tried a factory reset?

stuart0001 said:
exfat
Click to expand...
Click to collapse
Copy everything off sd card. Convert to fat 32. Copy everything back.
Sent from my HTC One_M8 using XDA Premium 4 mobile app

lukes91 said:
so are you on stock? if so have you tried a factory reset?
Click to expand...
Click to collapse
Stock but rooted and S-Off'd
I've not tried a reset yet but it's been as good as gold until about an hour ago when it suddenly started flashing between "preparing SD card" & "SD card unexpectedly removed"

Android The Greek said:
Copy everything off sd card. Convert to fat 32. Copy everything back.
Sent from my HTC One_M8 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
I'll give that a go but why has it been working fine for over a month whilst exFAT if that is now the cause?

stuart0001 said:
Stock but rooted and S-Off'd
I've not tried a reset yet but it's been as good as gold until about an hour ago when it suddenly started flashing between "preparing SD card" & "SD card unexpectedly removed"
Click to expand...
Click to collapse
well, a simple solution is to enter recovery and see if the sdcard works there if this way it works, change the rom/perform factory reset, if this doesn't, well, you might try to flash everything again, but i's possible that the sd slot is broken...
i wish you all the luck, let me know

I would copy EVERYTHING off the card to a PC and do a format and try a different file system. I would has perform the format on the phone, to make sure its gets formatted to the correct file systems.
Long story short, It sounds like you memory card is starting to get Corrupted. I have to SanDisk cards that started doing that in the biginning and ended up not being read at all on PC nor the Phone.
Also while its doing that, youll also notice the battery start to drain more, at leasst thats what happended on my Note 3 when I had the san disk cards going corrupt.
Ended up buying new Card and now everything is fine.
I doubt is the card reader built in phone, more then likely its your memory card going corrupt.

hypersonicx said:
I would copy EVERYTHING off the card to a PC and do a format and try a different file system. I would has perform the format on the phone, to make sure its gets formatted to the correct file systems.
Long story short, It sounds like you memory card is starting to get Corrupted. I have to SanDisk cards that started doing that in the biginning and ended up not being read at all on PC nor the Phone.
Also while its doing that, youll also notice the battery start to drain more, at leasst thats what happended on my Note 3 when I had the san disk cards going corrupt.
Ended up buying new Card and now everything is fine.
I doubt is the card reader built in phone, more then likely its your memory card going corrupt.
Click to expand...
Click to collapse
I agree most likely the card. I'd download an sd card format tool and do a full format, don't use Windows format then do full check for bad sectors. I had a similar problem and it was the card at fault, but strangely worked ok on the pc.

stuart0001 said:
I'll give that a go but why has it been working fine for over a month whilst exFAT if that is now the cause?
Click to expand...
Click to collapse
I have been through many a Samsung phones and always had corrupt sd cards in exfat. One day I saw a thread that said convert to fat32 and have never had a problem since.
Sent from my HTC One_M8 using XDA Premium 4 mobile app

Thanks for all the advice.
I could read the card in recovery but it failed to format there.
I tried to format in windows but my only options were NTFS or exFAT, no FAT32. But this failed anyway also.
Downloaded a SD format application but this said the card was write protected and to move the lock switch, obviously MicroSD has no switch like standard SD.
So next I deleted all the files on the card and ran h2testw test. This failed and reported card is probably faulty.
Then I checked the contents of the card again and all the original files were back again, so it's definitely 'Donald Ducked'. I was able to get all my files backed up and fortunately I had my photos already thanks to Dropbox & G+.
So I will now look at getting MyMemory to replace it but my fear is they will want me to return the faulty card but it has sensitive information on it that I can't delete. Any ideas on how I can wipe it?

stuart0001 said:
Thanks for all the advice.
I could read the card in recovery but it failed to format there.
I tried to format in windows but my only options were NTFS or exFAT, no FAT32. But this failed anyway also.
Downloaded a SD format application but this said the card was write protected and to move the lock switch, obviously MicroSD has no switch like standard SD.
So next I deleted all the files on the card and ran h2testw test. This failed and reported card is probably faulty.
Then I checked the contents of the card again and all the original files were back again, so it's definitely 'Donald Ducked'. I was able to get all my files backed up and fortunately I had my photos already thanks to Dropbox & G+.
So I will now look at getting MyMemory to replace it but my fear is they will want me to return the faulty card but it has sensitive information on it that I can't delete. Any ideas on how I can wipe it?
Click to expand...
Click to collapse
How did you attach the card to the pc? Try a usb card reader and then try again. If still problems download mini partition tool (Google) and delete the partition. You can then wipe it properly.

I reformatted the SD card from the settings within the phone and since then it been working fine :\
make sure you're using 2.0USB also..

when i connect my phone to charger
Its been few days i am noticing when i conmect my phone to charger it says 'sd card removed unexpectedly or either it suddenly stops showing content from my phone, then i have to go to settings unmount/mount the sd card frkm storage option and then it shows the content even when charging, or sometjmes it doesn'fshow option for that so on that case i have to restart my phone. What could be the possible reason and solution to that. It was fine on 4.4.4 now i am on 5.0.2 all stock htc one m8 h/k edition with sim unlock and s-off via sunshine.