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Hey all. Over the past week or so, I've been experiencing a problem where randomly, a message will come up in a random task saying something like "SD Card unmounted unexpectedly, it may be damaged." Anybody else experiencing this? It is the stock SD card and I've made 100% sure it wasn't loose or anything. Think this could just be a bad SD card?
willtoskie said:
Hey all. Over the past week or so, I've been experiencing a problem where randomly, a message will come up in a random task saying something like "SD Card unmounted unexpectedly, it may be damaged." Anybody else experiencing this? It is the stock SD card and I've made 100% sure it wasn't loose or anything. Think this could just be a bad SD card?
Click to expand...
Click to collapse
I'm running into the same problem. I've been ignoring it in hopes that it's a software issue that will get resolved whenever a JB ROM is released. Are you running a custom rom? I'm running The Base 0.7.3.
Fyi, I haven't had this problem at all in over two months of use. Ran stock for about a month and The Base rom for the past month.
Thank god other people have had it happen too. It's happened to me a lot BUT.. I had a 32gb class 4 SanDisk in my phone and that was constantly unmounting itself but I put the 16gb that came with my phone and it has yet to do it. Are you guys using a card other than what it came with?
Sent from my LG-E970
It happens to mine quite a bit, probably 7-10 times a day. I'm using a SanDisk 64GB class 10 SD card, formatted as ExFAT. Maybe I'll try switching back to the stock card to see if that has anything to do with it.
I had the same problem and switch out the card and the error stopped. I had the 32GB SanDisk Ultra and with that card it I was getting the random dismounts. I replaced it with the stock card and was working fine. I returned the SanDisk card and got a new one and it seems to be fine for about 5 days now.
What file formats are you using. My 64 GB is formatted as Fat32 and I've never had this issue. I also think that the included SD Card was pre-formatted to Fat32 which may be the reason it stopped when you switched back to it.
There you go... I've always used the stock sd card. Are you guys losing data when this happens?
This used to happen to me on my 64GB Sandisk Class 10 formatted with exFAT. I fixed it by running CHKDSK with both options checked in Windows 7. Hasn't happened since. It said it didn't detect any errors but it did something lol.
I don't believe I've lost any data. All of the songs I put on the SD card still play. I may try repairing it or using the SD card from my inspire, which may prove to be worse since I think it's only a class 4. I'll post once I figure something out.
One last thing was I tried doing a non-quick format of the card and after that my phone would not recognize that card at all until i exchanged it for a new one.
I generally don't recommend letting Windows GUI format a flash card. Google around for windows make clean, windows command line clean and format. That's your ticket right there.
There seems to be a prevalent issue in the latest jelly bean update in Galaxy S2 and Galaxy S3. All is smooth but after sometime this error pops up "Sd card unexpectedly removed" and then "Preparing Sd card".
This is related to the micro SD cards and not the internal storage memory.
In lots of forums people keep speaking about hardware issue! But I can assure you that it is not a hardware issue since I am now running CM9 stable for Galaxy S2 i9100 and the card is working fine with no error whatsoever.
There is an app called SD Card Monitor to check whether the SD card is being unmounted.
So there is no problem in ICS ROMs. My father's Galaxy S3 started giving the error once he updated to the official Samsung Jelly bean stock. If I run any jelly bean ROMs based on the Samsung stock I get these notifications in my phone plus the app SD Card Monitor reports a lot of bad unmounts. Around 15 to 16 in a span of 5 minutes.
The card I use is 32gb micro SD class 4 Transcend. People have reported same issues with Sandisk and even Samsung branded micro SDs. I really doubt some unwanted changes Samsung might have put in their code in Jelly Bean which makes these errors pop up.
I am posting this issue so that the developers would know that such an issue exists in the latest Samsung Jelly bean official ROMs and other ROMs based on the Samsung Stock.
Currently I am running ICS 4.0.4 CM9 Stable. I have formatted the card in Windows under Fat32. I have even tried NTFS and exFat. The unmounting issue was always there in the Samsung Jelly Bean but there is no issue in ICS.
same problem happened to me ,my SD is sandisk 32gb class 4
it happened after upgrading to the latest JB update
Not there in ICS
P Y T H O N said:
same problem happened to me ,my SD is sandisk 32gb class 4
it happened after upgrading to the latest JB update
Click to expand...
Click to collapse
In order to confirm, I have tried variety of ROMs.This issue popped up in Chameleon, NeatROM and also CM10.1. Now When I am running NeatRom ICS version there is no issue. I also checked with CM9. There is no issue. This has to be something related to Samsung. There are lots of discussions out there where Galaxy S3 is destroying SD cards. Something has to be done.
Not much hype is created because the worst that can happen is a dead SD card. Well High capacity SD cards are not cheap.
Confirmed issue in Samsung Jelly Bean Sources for Galaxy S2 i9100 and Galaxy S3 i9300. Possibly on other Samsung Jelly bean sources as well.
Issue mostly happens on high capacity cards, maybe 16gb or above.
Most affected brands - Sandisk, Transcend.
No issue when running ICS sources.
hi, is there a way to fix it?
I've got a Samsung Galaxy S2 i9100 with Jelly Bean and Sandisk 32GB class 10.
Not Just Samsung
Hi All,
I have a HTC Desire S, running Flinny Andromadeus - CM 10.1 and I also have this problem with a 32GB Micro SD Card.
Many Thanks,
Graham
Graham_Kendall said:
Hi All,
I have a HTC Desire S, running Flinny Andromadeus - CM 10.1 and I also have this problem with a 32GB Micro SD Card.
Many Thanks,
Graham
Click to expand...
Click to collapse
You have to ask on the forum for your phone, this is galaxy s2 forum
Sent from my gt-9100 powered by dorimanx
You can thank me if i helped you
intimateangel said:
There seems to be a prevalent issue in the latest jelly bean update in Galaxy S2 and Galaxy S3.
...
The unmounting issue was always there in the Samsung Jelly Bean but there is no issue in ICS.
Click to expand...
Click to collapse
That's not necessarily a fact because my "SD card unexpectedly removed" started when I was still on ICS, and haven't been rectified with the new JB releases.
After reading quite a lot I am inclined to think it's a hardware fault - either the SD card slot and connectors or the SD cards itself.
Everyone here seems to be dead set that it must be a Sandisk problem, but I have this problem with 2 different A-DATA 32GB class 10 cards.
UPDATE:
If you have experienced this 'SD card unexpectedly removed' problem,
please go to the following defect issue, and click the star to register yourself as another user with the problem...
Issue 9736 - android - SD card unexpectedly removed error LG Ally - Android - An Open Handset Alliance Project - Google Project Hosting
Also, please add this note and link to the OP to hopefully catch people when they first see this thread, and encourage them to go there and register before getting lost in this rabbit hole (i.e. a real solution might not exist outside of fixing some code somewhere within the OS itself).
The reason for error "SD card Unexpectedly" in my phone was bad sectors on the sd card. When I replaced the sd card in shop with new one the error "SD card Unexpectedly" isn't showing again.
Again back to square one!
tatkovladko said:
That's not necessarily a fact because my "SD card unexpectedly removed" started when I was still on ICS, and haven't been rectified with the new JB releases.
After reading quite a lot I am inclined to think it's a hardware fault - either the SD card slot and connectors or the SD cards itself.
Everyone here seems to be dead set that it must be a Sandisk problem, but I have this problem with 2 different A-DATA 32GB class 10 cards.
Click to expand...
Click to collapse
Well, I have reason to believe because my observations point me that way.
There is no hardware fault whatsoever as I have been using an 8gb Card without any issues. Now a 16gb Card without any issues.
Maybe your issue might be a hardware fault, that doesn't mean everybody has a hardware fault. When people say so you got to read everything. Even in my post I have specifically mentioned I had no issues in ICS. Please don't mix up everything.
"If your issues started with ICS that means you may have a problematic card or problematic hardware"
In my case I can assure you there is no problem with the card because it works perfectly in other Android devices and my phone does not have a hardware problem because 16gb and 8gb cards work perfectly in it.
I hope I have made myself VERY CLEAR.
Hey all,
I am having the same issue. The card may or may not be read by my laptop either, it's about 50/50. I was able to copy all the data off, thankfully. I know this isn't the S4 forum, but it's the same issue, hope you don't mind. I didn't see an S4 forum with this issue, unless I missed it.
Anyway, I read somewhere that this may be caused because the SD card was connected while rooting the phone. I don't know how true that is, but I gave it a shot. I re-rooted my phone with the card removed. Then, I formatted the card (FAT32, 32KB) in my laptop. I did a full format, not a quick one. I did NOT format the card after I put it back in my phone. Then, I copied all the content back to the card (card in phone).
it's been ok for a few days now. Could this have been helpful? Is it possible having it connected while rooting is causing an issue? I'll update here if it starts acting up again.
Sandisk 32GB SDHC Class 10 Micro SD card
Samsung Galaxy S4 (SGH-I337) AT&T
Windows 7 64 Bit
android5511 said:
Hey all,
I am having the same issue. The card may or may not be read by my laptop either, it's about 50/50. I was able to copy all the data off, thankfully. I know this isn't the S4 forum, but it's the same issue, hope you don't mind. I didn't see an S4 forum with this issue, unless I missed it.
Anyway, I read somewhere that this may be caused because the SD card was connected while rooting the phone. I don't know how true that is, but I gave it a shot. I re-rooted my phone with the card removed. Then, I formatted the card (FAT32, 32KB) in my laptop. I did a full format, not a quick one. I did NOT format the card after I put it back in my phone. Then, I copied all the content back to the card (card in phone).
it's been ok for a few days now. Could this have been helpful? Is it possible having it connected while rooting is causing an issue? I'll update here if it starts acting up again.
Sandisk 32GB SDHC Class 10 Micro SD card
Samsung Galaxy S4 (SGH-I337) AT&T
Windows 7 64 Bit
Click to expand...
Click to collapse
I don't think rooting is the cause for that (I will give you an opinion from the s2 perspective) usually in our device either the card is loose, or some rom has some bugs, next time it happens just try carefully cleaning it with a dry cloth and insert it firmly, also do not remove again unless that problem occurs again, frequent SD card changers have had problems like this since they remove their SD card often, which makes it slightly loose.
Sent from my GT-I9100 using xda app-developers app
king_below_my_lord said:
I don't think rooting is the cause for that (I will give you an opinion from the s2 perspective) usually in our device either the card is loose, or some rom has some bugs, next time it happens just try carefully cleaning it with a dry cloth and insert it firmly, also do not remove again unless that problem occurs again, frequent SD card changers have had problems like this since they remove their SD card often, which makes it slightly loose.
Sent from my GT-I9100 using xda app-developers app
Click to expand...
Click to collapse
Just adding to the information already gathered ....
Probably not rooting and may not be device specific. May be related to JB - some posts elsewhere suggest that the problems started happening on S2/3 devices after a JB upgrade from ICS. I have a Galaxy S4, non-rooted, put in a brand new Samsung 64GB SDHC Class 10 and got the problem after a day. Started happening when I was using the Video Camera - not sure if this is significant.
It got so bad that the phone started complaining that the SD card was corrupt. When I put it on a PC - there were no problems with the SD or the files on it.
So I'm going to try formatting the SD card (as exFAT) on my PC and see what happens. I'll let you know how this gets on - not too hopeful that this will fix the problem.
Had same issue with two Transcend 32gb cards. In both cases, after unexpected unmount sd cards were completely dead...
Same problem on Galaxy s2 with CM10.1 and Sandisk 32gb class 10.
No solution yet?
I have the same issue with my 32GB Sandisk card.
This happens on my S2 and S3. After a night of unmount bug my sd card is dead.
I had issues with a 64GB card on my S3 that I thought would end when I got my S4. It didn't.
I'd be scrolling down in Titanium to restore my apps and the card would be "removed unexpectedly".
I just put in a brand new card and haven't had any issues since.
For people who ended up with dead card - did you use ext sd for camera storage, or torrent dowload, etc?
Maybe frequent read/writte on jb at one point corrupts and kills ext sd. Just thinking loudly.
Now I am using 3rd (!) card - storage for photos and everything else is on internal. So far is ok. In previous (and fatal) cases, both of cards died after 3 months of usage.
Checking on ICS
Hi,
I have same issue on JB 4.2.2 with Sand disk 32 GB class 4 card ... I am downgrading to ICS to check this issue ..
---------- Post added at 10:57 AM ---------- Previous post was at 10:50 AM ----------
varunmagical said:
Hi,
I have same issue on JB 4.2.2 with Sand disk 32 GB class 4 card ... I am downgrading to ICS to check this issue ..
Click to expand...
Click to collapse
Hi,
Now I can confirm this is a hardware issue...
I downgraded to ICS using the nandroid backup image I was using in october 2012. My card was working fine with this image .. Now it refuses to even acknowledge that the card exists ..
varunmagical said:
Hi,
I have same issue on JB 4.2.2 with Sand disk 32 GB class 4 card ... I am downgrading to ICS to check this issue ..
---------- Post added at 10:57 AM ---------- Previous post was at 10:50 AM ----------
Hi,
Now I can confirm this is a hardware issue...
I downgraded to ICS using the nandroid backup image I was using in october 2012. My card was working fine with this image .. Now it refuses to even acknowledge that the card exists ..
Click to expand...
Click to collapse
That doesn't mean it's hardware issue. It means - after software issue of your phone, it became hardware issue for your card.
If you really want to test, buy another card, use it with ICS, and then you will see if it is hardware issue...
Ok, after buying a cheap and corrupted 64gb micro sd card, I went and spent the money on a 64gb sandisk card. It works just fine. Now, I am rooted and have synergy rom build 104 which is also running fine. I noticed before I flashed the rom that cwm wouldn't recognize my external sd card. I read up on that and found that cwm won't read cards formatted to exfat. So, I formatted the card to fat32 and remounted, transferred all my music back onto the card. Everything worked just fine until I plugged my phone into my computer. I was able to open and navigate through the files like normal, except when I went to open the music folder where all my mp3s were. I tried this on 2 different computers and on both the computer froze with the sand timer. The phone itself was fine, my music player(poweramp) was and is able to play the files with no issue. Also, when I unmounted the card and put it into a card reader and then connected the card reader to my computer and voila! Everything was fine, I was able to open the music folder and scan through the music files. I am not sure what the issue is. Can anyone shed some light as to whether this is a phone/rom issue, a micro sd card issue, an mp3 issue? Any ideas would be appreciated.
That sounds like a bad sd card. Have you ran a checkdisk on it?
Sent from my SCH-I545 using Tapatalk 4 Beta
If it's a SanDisk 64GB MicroSDXC UHS-1 then they have a replacement program where the older cards had issues in the S3/S4 devices. They sent me a free replacement and everything seems to be working. No Damaged card errors as of yet.
DarkMenace said:
If it's a SanDisk 64GB MicroSDXC UHS-1 then they have a replacement program where the older cards had issues in the S3/S4 devices. They sent me a free replacement and everything seems to be working. No Damaged card errors as of yet.
Click to expand...
Click to collapse
Hm, been searching around for this exact issue. Coworkers S4 with this exact SD card has been getting the removed unexpectedly error. Reformatted a few times, restarted phone, error comes back. It's in my Note 2 at the moment for troubleshooting, and so far so good, but this makes me move more toward an actual SD card issue in combination with the s4, and not the phone itself.
h1p1n3 said:
Hm, been searching around for this exact issue. Coworkers S4 with this exact SD card has been getting the removed unexpectedly error. Reformatted a few times, restarted phone, error comes back. It's in my Note 2 at the moment for troubleshooting, and so far so good, but this makes me move more toward an actual SD card issue in combination with the s4, and not the phone itself.
Click to expand...
Click to collapse
The SanDisk issue only affects the Galaxy S3/S4 as they told me. My other 64gb Sandisk card works just fine in my tablet.
DarkMenace said:
If it's a SanDisk 64GB MicroSDXC UHS-1 then they have a replacement program where the older cards had issues in the S3/S4 devices. They sent me a free replacement and everything seems to be working. No Damaged card errors as of yet.
Click to expand...
Click to collapse
I called them and they are going to exchange it out for me. The weird thing is that I didn't get any damaged card error messages on the phone itself. It mounted it as soon as I popped it in. Even after formatting to fat32, it mounted right away with no issues. It only happened a couple days after I transferred all my music onto it. Is the free replacement they give you a newer card or newer model number?
+1 to the above. SanDisk told me they have a new version of the 64gig card with updated firmware, specifically for the S4. Package tracking shows mine is to be delivered on Monday.
tylerdurden531 said:
I called them and they are going to exchange it out for me. The weird thing is that I didn't get any damaged card error messages on the phone itself. It mounted it as soon as I popped it in. Even after formatting to fat32, it mounted right away with no issues. It only happened a couple days after I transferred all my music onto it. Is the free replacement they give you a newer card or newer model number?
Click to expand...
Click to collapse
It's the newer models. With the updated Firmware.
stuartv said:
+1 to the above. SanDisk told me they have a new version of the 64gig card with updated firmware, specifically for the S4. Package tracking shows mine is to be delivered on Monday.
Click to expand...
Click to collapse
Yeah, the guy said they were having stock issues and said it would take 3 weeks for mine to ship. Oh well, at least they are exchanging it. Thanks for the help guys!
Sent from my SCH-I545 using xda app-developers app
So are all 64GB cards having issues, like other brands? I want a 64 bc my backups are freaking huge and taking up space. And with being rooted how would I transfer everything to the new card without messing up the phone?
Sent from my SCH-I545 using Tapatalk 2
stuartv said:
+1 to the above. SanDisk told me they have a new version of the 64gig card with updated firmware, specifically for the S4. Package tracking shows mine is to be delivered on Monday.
Click to expand...
Click to collapse
So when this card tanks, I have to drop the big money on a card specifically made for this phone. Is this a problem with existing cards or did Samsung do something that required this firmware change?
tylerdurden531 said:
Yeah, the guy said they were having stock issues and said it would take 3 weeks for mine to ship. Oh well, at least they are exchanging it. Thanks for the help guys!
Sent from my SCH-I545 using xda app-developers app
Click to expand...
Click to collapse
They told me that too. My guess is it's due to the mass recall of the chips for the S3/S4. They said it's not present in Tablets so my 64GB in my tablet would be fine.
+1 problem with Sandisk 64Gb UH-1 card. Unexpected removal error. I am writing just for statistics. Just got my new Verizon S4 - and have problems...
FYI - I'm having a similar issue with a Samsung 64GD card. Got it to see the music for a while yesterday but after a reboot it can no longer see it.
Update, I received my new card and just popped it in. My phone automatically formatted it to exFAT. I'm not going to try changing it to FAT32, but is there any version or way I can get cwm to recognize the card in exFAT format? I tried TWRP, but when I flashed a rom it soft bricked the phone so I would like to stick with cwm.
So my MicroSD card (32GB SanDisk Class 10 Red/Grey) has been acting weird lately (since I upgraded from ICS to JB). Not my phone automatically unmounts the card from time to time and I don't know why. I have trying formatting from Windows and from the phone, with FAT32 and ExFat. And I don't want to wipe my phone or install any other ROM or similar stuff.
I will try another card, but is there something I can do to prevent this?
This has nothing to do with your ROM or your phone, it's your SD card itself which is causing this problem. Just try another SD card and I'm sure the problem is solved.
Sent from my GT-I9300 using xda premium
I will try... but is weird because the problem started right after I upgraded my phone.
faulty sd card slot may be if it doesn't recognise any card.
sent from my GS3 running PARDUS ROM XXUFME7
Well known issue with SanDisk cards
http://forum.xda-developers.com/showthread.php?t=2197548
Sandisk admits to faults with Mobile ultra SD cards
Well yeah, some sandisk class 10 32gb have issues.
But what about the countless other micro sd cards being reported as fried by the s3?
I believe there is also something wrong with some s3 that kills sd cards.
I've had it happen with sandisc 32gb, and kingston 16gb.
dxppxd said:
Well yeah, some sandisk class 10 32gb have issues.
But what about the countless other micro sd cards being reported as fried by the s3?
I believe there is also something wrong with some s3 that kills sd cards.
I've had it happen with sandisc 32gb, and kingston 16gb.
Click to expand...
Click to collapse
Yup, S3 has some issues with SD cards (see http://forum.xda-developers.com/showthread.php?t=1906058&highlight=sd+card+killer). Allready killed one of mine too, couldn't do anything with it. No device even recognized it anymore.
I insist, maybe it's my phone because it happened right after the upgrade, maybe something in the ROM, OS, kernel, or something... so I guess it's a lottery... I'm trying another card now...
Its the phone
eXtremeDevil said:
So my MicroSD card (32GB SanDisk Class 10 Red/Grey) has been acting weird lately (since I upgraded from ICS to JB). Not my phone automatically unmounts the card from time to time and I don't know why. I have trying formatting from Windows and from the phone, with FAT32 and ExFat. And I don't want to wipe my phone or install any other ROM or similar stuff.
I will try another card, but is there something I can do to prevent this?
Click to expand...
Click to collapse
don't use the card for anything you want to keep. backup to Dropbox constantly....
~Roxy
if it doesn't work with a different card - replace the slot
Hi Folks,
now i snatched me an ZU because teh price tag of 222€ was to tempting. Mainly because i like strange phone Sizes... and why carry two devices, when you can have one awkwardly big one ^^
Now, I have an SanDisc Ultra 64GB Class 10 Card...
And guess what, when i fire up Comic Rack, it tells me that the SD Card is removed and tries to read it again.
Now is the Card Broken? I formated the card new, and after two tries my Laptop was able to format it? Sonds like something is messed up in the Card?
I still have warranty on the Card? so is it best to just send it back and get a replacement?
Thanks in advance.
EDIT:
I'm pretty sure the card is done. Walkman always freezes when it tries to read from the card
And it's said again that the card is removed.
Even with no activity at all the card struggles and is removed from device.
Thread is done. Mods can delete.
Thx guys