Develop Bugs

[Q] SD card unexpectedly removed

Using the pre-installed stock Samsung Class 2 micro SDHC 8gb
Constantly getting this error from the DHD:
"SD card unexpectedly removed"
Symptoms:
1) Usually happens after installing / removing apps.
2) Tends to re-boot by itself after "hang" after about 10 seconds
Note the following items:
1) USB Debugging = ON
2) SIM card is fully inserted
3) SDHC card is fully inserted
4) Using stock ROM
5) PC Error Checking (bad sector) = No error
6) Have tried to format the SDHC. Result = same error
Any ideas on how to troubleshoot tis ?
Is the pre-installed SDHC card at fault ?
Thanks

Another thing you can try is to check with another card (New or Old)
If it still does it....then there shud be some problem with the card holder unit or something...get it replaced mate

Had the same issue. Think your SD card is broken. Mine was. Couldn't even get it to work on a pc. Tried a new SD card and the problem was gone. Just got out of the Vodafone store. They replaced the SD card under warranty.
Sent from my Desire HD using XDA App

I've got EXACTLY the same problem. It's bloody crazy!
I read that the phone may not be able to cope, as it's only a class 2 card - but I don't think that is correct, is it?
I've contacted HTC, and they just told me to take it back to the store and ask them to check it out. I'll probably do that in a week or so.

it just happened to me!! randomly. everything was fine and then suddenly it just failed on me. any clue why?

my4000 said:
it just happened to me!! randomly. everything was fine and then suddenly it just failed on me. any clue why?
Click to expand...
Click to collapse
Bundled Samsung SD cards with the latest OTA update are known to fail, search for more info in other threads here to see if you'd qualify for a warranty replacement.
Sent from my Desire HD using XDA App

sengork said:
Bundled Samsung SD cards with the latest OTA update are known to fail, search for more info in other threads here to see if you'd qualify for a warranty replacement.
Sent from my Desire HD using XDA App
Click to expand...
Click to collapse
damn, same thing just happend to me, SD card error and thats it, its dead..nothing can read it. just lost pics i took when i went out this weekend :| absolute rubbish
time to search and find the threads you're on about

Been happening to me on the stock Samsung class 2 8gb... anyone encountered any problems changing to a class 4 card?
Sent from my Desire HD using XDA App

when I woke up this morning I couldn't access any of the programs on my sd card (SanDisk 16GB Class 2 SDHC), when I rebooted my desire HD the same thing happened. I tried manually mounting it, rebooting like ten times, inserting, ejecting the card etc, nothing would work.
Can't be the phone just smashed a 16GB card over night :/

YES....!! Gggrrrrr! it just happened to me last night. I rebooted my phone after installing some different Apps throughout the day (as is usual in my Android daily life). then after the phone rebooted about 30-45 seconds later i saw the "SD Card unexpectedly removed", thats strange i thought. Couldn't get past that after about another 4 reboots i removed the SD Card and tried it in a card reader on my PC. similar thing, I could ready the file structure on the WIN PC but then about 30 seconds later the drive disappeared and was no longer available. I then re formatted the card (started the process withing the first 30 seconds) and thought that would fix it. Now neither my WIN PC or Desire can read the card. also tried in Lynx Puppy environment but no go.
I think my 16GB Class 2 card is TOASTED. Was it because it used an Ext4 Partition on the card for the past 7 weeks? I heard some people in the site saying that Ext4 can damage your SD Card...?

Had the same problem - lost all my unbacked-up data. Quite disappointing. Bought a new micro SDHC and hasn't had a problem since.

So it's the SD-Card then?
It's happening to me most of the time and it's really anoying!

Yep time to buy a new one.if your luck and still able to access your old card then get it backed up quick.......before it goes tits up.
Sent with Desire.

Just visited the HTC customer center last week to check on this issue. Seems like its got to do with a bad batch of cards.
They replaced an identical Samsung microsd class 2 8gb card to let me use for a couple of days. Told me that If I was to still encounter the same problem, it could be problems with the card reader chasis, and I'd have to leave the phone with them for a couple of days.
I'm happy to report that I have not had 1 single "SD card removed unexpectedly" since I got the new replacement card.
I highly suggest for people facing the same problem to get their cards replaced by the seller or HTC.
Sent from my Desire HD using XDA App with 5 seconds of battery left

I just have the same problem like yours.
I tried many way and methods, It just can't working fine!!
so I buying another sdhc as sandisk 8G class 4
now I have no problem for two months so far.
I am reasonably to Suspected...
that the problem happends cuz this garbage samsung SDHC!!
Change it now! you'll feel like:[what a wonderful world~]

The "telus" version comes with an 8gig class 4 card but upgraded to a 16gig class 10. No problems either way.
Guess Canada nipped it in the bud

I was going fine with the stock 8Gb card and then I replaced it with a class 10 16Gb card and after about a week it started randomly ejecting. The card worked fine in other devices and can always be read in Windows but I guess it's only time - I have had another card go in the past and it's a real downer.
I'm not convinced it's the card. I've tried uninstalling any suspect apps but it hasn't made much difference.
Formatting the card and replacing all the files kind of works but I have still had one random 'eject' in the last 48hrs since I last formatted.
Actually the problem seems to have started when I re-flashed my current rom - Android_Revolution_HD-4G_4.0_beta4
Wish we could find out what is going on here.

Having the exact sample problem, but with a 16g card that I bought several month ago. I have another 16g card, will swap and see if the problem go.

I had this problem as well
So I formatted the SD Card and had the problem since...
however sometimes, it cant seem to recognise some pictures in the card, so i use SD rescanning app...

Heard someone saying this was caused by an OTA, well I had a warning around 2 days before the SD-Card Un-Mounted saying that the Card was in Read-Me format... anyway 2 days later my SD-Card became un-mounted and then became comepletely useless. I was unable to mount it or anything, going to get my dad to ring up HTC, as we rung my carrier and they said the problem 'had never been reported' which is bull**** as theres enough people here with the problem...

Strange SD Card problem

I had a strange problem happen to my SD Card on my SG3. I have a Patriot 16GB class 10 card that I used on my EVO 4G for a almost 2 year without a problem. After when I got my new phone I clean all folders that I no longer needed except my pictures and some applications. Put the card in my SG3 and everything was OK. I was able to copy files take a pictures and everything seems to work the way it should. Last week I was on a trip and during the process to taking a picture I got a message that my card was removed and basically disappear. I reboot the phone and nothing happen. then a little bit later I saw another message that card was found and everything show up again. Then I check do I have all the pictures and most of them were there except on a last one was (when card disappear) basically it was look like that picture was taken a half way. So I delete that bad picture and continue. A day later it happen again but this time when card show up again instead a normal card I have that message in notification bar with a little sd card that it says Blank SD card. then if I pull down and click on it phone is asking me to format the card. I try to mount the card but got the same message Blank card or unsupported file system. Ok so I didn't have at that time my adapter to plug in to my laptop and wait until I got home to try to repair the card.
Here is what I got now and I'm not sure is phone damage the card or card slot on the phone is not good.
I use minitool under windows and GParted as well under linux. Both of them recognize my card as 60 GB Unallocated space (it is a 16GB). when I try to recreate or format both of them said successful but card is not show up. I have to plug it back and then it goes again as a 60GB unallocated space.
Does any one know how to format a 16GB card as FAT32? I mean the settings I have to use to put to get back again this card as a 16GB not as 60GB.
Sorry for the long explanation and thanks for you help in advance.
P.S. I' not rooted and on LG8 update.

Bro,did to trid any other sd?
sent from my htc

ventzi said:
I had a strange problem happen to my SD Card on my SG3. I have a Patriot 16GB class 10 card that I used on my EVO 4G for a almost 2 year without a problem. After when I got my new phone I clean all folders that I no longer needed except my pictures and some applications. Put the card in my SG3 and everything was OK. I was able to copy files take a pictures and everything seems to work the way it should. Last week I was on a trip and during the process to taking a picture I got a message that my card was removed and basically disappear. I reboot the phone and nothing happen. then a little bit later I saw another message that card was found and everything show up again. Then I check do I have all the pictures and most of them were there except on a last one was (when card disappear) basically it was look like that picture was taken a half way. So I delete that bad picture and continue. A day later it happen again but this time when card show up again instead a normal card I have that message in notification bar with a little sd card that it says Blank SD card. then if I pull down and click on it phone is asking me to format the card. I try to mount the card but got the same message Blank card or unsupported file system. Ok so I didn't have at that time my adapter to plug in to my laptop and wait until I got home to try to repair the card.
Here is what I got now and I'm not sure is phone damage the card or card slot on the phone is not good.
I use minitool under windows and GParted as well under linux. Both of them recognize my card as 60 GB Unallocated space (it is a 16GB). when I try to recreate or format both of them said successful but card is not show up. I have to plug it back and then it goes again as a 60GB unallocated space.
Does any one know how to format a 16GB card as FAT32? I mean the settings I have to use to put to get back again this card as a 16GB not as 60GB.
Sorry for the long explanation and thanks for you help in advance.
P.S. I' not rooted and on LG8 update.
Click to expand...
Click to collapse
Windows will format it just fine under Disk Management. The fact that its reading it as a 60GB... I'd bet on the card as bad. I have hours and hours trying to save thumb drives and SD cards. 97% of them had no hope. Sometimes the card reader can act up... but not likely, and the phone's kicking it out too. Try to stick with Kingston or SanDisk even if you have to pay a little more. Yes, Cards do go bad like that.

a454nova said:
Windows will format it just fine under Disk Management. The fact that its reading it as a 60GB... I'd bet on the card as bad. I have hours and hours trying to save thumb drives and SD cards. 97% of them had no hope. Sometimes the card reader can act up... but not likely, and the phone's kicking it out too. Try to stick with Kingston or SanDisk even if you have to pay a little more. Yes, Cards do go bad like that.
Click to expand...
Click to collapse
Thanks for the reply. It is look like that this card is going bad. It kind a surprise me since I didn't have any problems under my old phone. I will play a little bit more to try to repair it but....... looks like will be a lost a time.
Do you think that because it was a class 10 card causing a issue? I saw a couple treads but most of the SD card that people use are class 4.

ventzi said:
Thanks for the reply. It is look like that this card is going bad. It kind a surprise me since I didn't have any problems under my old phone. I will play a little bit more to try to repair it but....... looks like will be a lost a time.
Do you think that because it was a class 10 card causing a issue? I saw a couple treads but most of the SD card that people use are class 4.
Click to expand...
Click to collapse
I don't think the class would be an issue. How old is your card?

The Root said:
I don't think the class would be an issue. How old is your card?
Click to expand...
Click to collapse
Probably 1.5 year. I got my EVO 4G back in sept. 2010 and bought the card a couple months later when rooted my phone.

Yeah, like root said, the class wasn't the issue. The different phone might have pissed it off but you really never know. I never liked Patriot myself, but then some people like them. Gotta back stuff up or have it auto upload somewhere.

a454nova said:
Yeah, like root said, the class wasn't the issue. The different phone might have pissed it off but you really never know. I never liked Patriot myself, but then some people like them. Gotta back stuff up or have it auto upload somewhere.
Click to expand...
Click to collapse
I do have all the pictures auto uploaded to my DropBox account and all apps I backup on my PC. I just wondering if the card slot of the phone is bad. I have a new 4GB class 4 card. I will put in to the phone, format and try to see if it happen again.

last week suddenly received a message that the card was blank. did everything i could not to format it. finally gave in and tried formatting the sd card but couldn't. had to buy a new one. sounds like yours is going bad as well.

also try this thread as it has helped many
http://forum.xda-developers.com/showthread.php?t=1355528

a454nova said:
Yeah, like root said, the class wasn't the issue. The different phone might have pissed it off but you really never know. I never liked Patriot myself, but then some people like them. Gotta back stuff up or have it auto upload somewhere.
Click to expand...
Click to collapse
When I first got my SGS3 I used my old card from my OG Droid. I got an OTA update and my phone quit working (I got the "Unfortunately the process com.android.phone has stopped working" message). I took the phone back and they asked if I had ever had an SD card in it. I said "Yes, my old card from my Droid." I was told that this is a "known issue" with the SGS3 and that any SD card I used should be formatted in the phone itself. I'm not sure if this is the issue here, but it might be.

ventzi said:
I do have all the pictures auto uploaded to my DropBox account and all apps I backup on my PC. I just wondering if the card slot of the phone is bad. I have a new 4GB class 4 card. I will put in to the phone, format and try to see if it happen again.
Click to expand...
Click to collapse
I bet it will be fine. Only one why to know.
Sent from my SPH-L710 using Tapatalk 2

a454nova said:
I bet it will be fine. Only one why to know.
Sent from my SPH-L710 using Tapatalk 2
Click to expand...
Click to collapse
I hope so. Thanks for you help.
P.S. I did play with couple more tools but unfortunately no luck at all. It is time to look for a new one.

sd card suddenly removed ?

Hi guys, I just encountered this problem twice tonight. First, it said "the card is damaged" or something like that then all my photos disappeared (I managed to recover all of them using a recovery software). I formatted and check the card with command promt in windows. Everything was fixed then I put it back to the phone. After a while playing around with it, it said "sd card suddenly/unexpected removed" and again, photos disappeared. I've had this phone for 4 months and never had this problem before. no idea what was going on. I looked this up and it turns out many people used to have this issue with their S3. My card is 32Gb sandisk class 4. Any ideas? right now it's working fine but Im scared that it might corrupt again.

I'm not sure why you formatted it when you put it into your computer, unless it didn't give you an option but i had the same problem happen to me last week and what fixed my problem was I would have my phone's backcover off while tuning the phone on with the microsd card not inserted and after the phone fully boots up then insert your microSD card and it should fix the problem or it did for me atleast, give it a shot.

My s3 still recognized the card. The card was not dead, only the file were corrupted. I formatted it since I thought that would make it "new" again... I also checked bad sectors with windows. Right now it's working fine, I'm just afraid it might happen again and corrupt my photos.
Is class 4 too slow? I have a class 10 SanDisk 32gb but I figured testing it would be a waste of time since I had 4 straight months without problem with this class 4.

rookiegenius said:
My s3 still recognized the card. The card was not dead, only the file were corrupted. I formatted it since I thought that would make it "new" again... I also checked bad sectors with windows. Right now it's working fine, I'm just afraid it might happen again and corrupt my photos.
Is class 4 too slow? I have a class 10 SanDisk 32gb but I figured testing it would be a waste of time since I had 4 straight months without problem with this class 4.
Click to expand...
Click to collapse
When you first put the SD card into your phone months ago, did you format with the phone or the computer? It's always recommended that you format from the phone, before you use it; because it can cause weird bugs down the line. Also, are you running any customs roms or is this happening on stock?

Well I don't remember if I formatted it. I'm on rooted stock JB. I've had this card for 5 months and it has stayed in my s3 since august. There were a couple of times I took it out without un mounting (I didn't know there was an option to unmount it), but that was like months ago. I've done a little search and actually, this is a pretty common thing.

rookiegenius said:
Well I don't remember if I formatted it. I'm on rooted stock JB. I've had this card for 5 months and it has stayed in my s3 since august. There were a couple of times I took it out without un mounting (I didn't know there was an option to unmount it), but that was like months ago. I've done a little search and actually, this is a pretty common thing.
Click to expand...
Click to collapse
I had the same problem. It would let me view pictures and play mp3's fine, but when I tried playing a flac or video, I would get the same error. I reformatted with android and haven't had a problem since.

mattedwards2686 said:
I had the same problem. It would let me view pictures and play mp3's fine, but when I tried playing a flac or video, I would get the same error. I reformatted with android and haven't had a problem since.
Click to expand...
Click to collapse
It has worked fine since last night. I just reformatted it again by the phone. Hopefully this won't happen again.

Had the same issue with my S3.
Turned out that the SD card was dying (the card brand is Team Group), this caused it to be unmounted by itself and then mounted again (sometimes showing notification “sd card removed unexpectedly”), hence triggering the “Media” scanning process and significantly draining the battery.
I created an application to monitor how many times the SD card was removed, and turned out to be unmounted every ~3 mins!!!
I then bought a new Transcend 32GB Class 10 card (made in Korea), and until now, this never happens, no reports from the application whatsoever, and no media process eating my battery.
I just published this app in the play store now, this is the link:
https://play.google.com/store/apps/details?id=com.sdcardmonitor

I had the same problem with a 32gb SanDisk class 10. Files would corrupt, it would occasionally not mount correctly, and I'd frequently get the SD card is Damaged message.
For me, it seems like it was simply a faulty card, as I have an 8GB and 16GB card that both have worked without issue. I sent the 32gb into SanDisk for warranty replacement.
Sent from my SGH-T999 using Tapatalk 2

I had this problem for a while. Try formatting the card to fat32 and see if its fixed.

Note dismounts SD card for no reason...

HI all,
Yesterday the Note 2 decided it wanted to update itself.
After the update all appeared to be well, but i have noticed that the SD card decides to dismount itself randomly, for no reason. The only way to re-mount it is to restart the phone.
Any advice?

I have been experiencing similar problems recently. I have yet to find any help with the matter. One problem I have is that the Camera will not save imges to the SD card although the option is chosen in the settings. I have also had folders created on the SD card from a PC dissapear from the SD card shortly after disconnecting from the PC.
I downloaded an app called Media Scanner which helped with a few of the problems.
https://play.google.com/store/apps/details?id=com.clypher.mediascanner

It could be, unfortunately, your SD card itself. Other threads that had the same problem seemed to get solved by getting a new SD card. If you have another card, try that to see if it makes any difference.

had the same issue a while back. Happened out of the blue. One day I could save to external SD card and the next day I could not. Long story short I back up everything on the card and formatted it. Problem solved after that

Just to update this threat. The phone was acting a little strange, after each reboot it would recognise the SD card, then out blue it would ask to format it. I decided to plug it in to my SD reader and in the the computer. The computer would not acknoweldge the card itself so i decided to put it back in the phone.
Long and short of it is, the phone will not read the card either. If i insert a new SD in, it reads and i can save items to it. I am a little miffed as to why this has happened though.

Dylanlewis2000 said:
Just to update this threat. The phone was acting a little strange, after each reboot it would recognise the SD card, then out blue it would ask to format it. I decided to plug it in to my SD reader and in the the computer. The computer would not acknoweldge the card itself so i decided to put it back in the phone.
Long and short of it is, the phone will not read the card either. If i insert a new SD in, it reads and i can save items to it. I am a little miffed as to why this has happened though.
Click to expand...
Click to collapse
Seems like a bunk SD card to me. This will happen time to time with low quality SD cards. Prob happened to all of us at one time. If the phone nor the card reader will recognize said card but will another this is a good sign the card is a goner. Sorry to be the bearer of bad news

Also got this problem often about two weeks ago. Don't know why exaxtly, aber after always removing SD when the dismounted-message show up seems to have solved the problem. Possibly there was some dirt in SD slot.
Handschriftlich von meinem Note 2 gesendet

got the same problem
tried to format as FAT32 and exFAT.... still no go
anyone know how to fix that??
i am using sandisk 32GB class 10

there are a lot of fake SD cards around, low quality cards that get rebranded as quality brands. these are much more likely to fail
for that reason I only buy Sandisk, Lexar or Samsung cards, and only from reputable vendor (i.e. not ebay, and only from Amazon and not an amazon partner/merchant)

speculatrix said:
there are a lot of fake SD cards around, low quality cards that get rebranded as quality brands. these are much more likely to fail
for that reason I only buy Sandisk, Lexar or Samsung cards, and only from reputable vendor (i.e. not ebay, and only from Amazon and not an amazon partner/merchant)
Click to expand...
Click to collapse
I use a SanDisk 64GB, bought it directly from Amazon.de and also got this problem.
Handschriftlich von meinem Note 2 gesendet

I had a similar problem (of auto unmounting microSD card) with my prev. phone, the Galaxy S2, which was hard-bricked. I found it strange that photographs were missing from the microSD card (other than those taken with stock camera), practically the photos in the Whatsapp folders despite I had configured to save to external storage. I bought a 32GB microSD and so far, it has no issues with my N7100.
Previous microSD card was a Sandisk 16GB, new card is a Kingston 32GB.

Dylanlewis2000 said:
HI all,
Yesterday the Note 2 decided it wanted to update itself.
After the update all appeared to be well, but i have noticed that the SD card decides to dismount itself randomly, for no reason. The only way to re-mount it is to restart the phone.
Any advice?
Click to expand...
Click to collapse
Happened to me b4 my sd card gets dismounted randomly i was lucky that i had the chance to backup everything to my pc because 2 days later the sd card became dead completely , I recommend you backup your data and buy a new SD

[Q] Problem with SD card

Hello to you all
First, I own this nice tablet s and bought a class 4 Kingston so card and didn't have much trouble until 4 days ago. Nearly every day since, the SD card stop working, and it needs to be formated in order to get it working again. I have copied several music a day videos and played them without any loss or error in them, but then from nowhere, it stops working.
Any ideas of how it can be fixed? I'm desperate cause I need to format it like once or twice everyday.
Thanks for reading.

I had a similar problem with my 32 Gig Sandisk Class 10 card, mine would just not read the card and would need a reboot to fix then it would be good for a few days and happen again. I have since replaced the 32 Gig card with a 64 Gig Samsung class 10 card, so far that card has not had any problems but I have only had it a week. I think the Tab S seems to be picky with certain cards. The 32 Gig card I have in a ASUS MeMo Pad 7 and it is working with no issues.

valkurchento said:
Hello to you all
First, I own this nice tablet s and bought a class 4 Kingston so card and didn't have much trouble until 4 days ago. Nearly every day since, the SD card stop working, and it needs to be formated in order to get it working again. I have copied several music a day videos and played them without any loss or error in them, but then from nowhere, it stops working.
Any ideas of how it can be fixed? I'm desperate cause I need to format it like once or twice everyday.
Thanks for reading.
Click to expand...
Click to collapse
depends on who/where you bought the sd card from. I have gotten knock off sd cards from ebay before that work like crap causing the issues you have described, so always buy from an official retailer. it may be that the sd card has gotten corrupted in a way that is not repairable as well

When it comes to sd cards (uSD) I have found using this to be the best tool for prepping/formatting and otherwise "fixing" cards. Now keep in mind, if a card is physically corrupted you're SOL but this utility has worked like a champ for me over the years.