Develop Bugs

(SOLVED)Sdcard Mounting/Unmounting by itself..

Hi guys,
Searched all over before asking, didnt found anything thats why have created this thread.
anyways, i have 32GB Fat32 formated sdcard (scan disk).
I am facing strange issue................the sdcard unmounts and mounts by itself.........................
tried formating the sdcard via pc....................all settings to default (allocation size and all)............but still having the issue and also formated the phone But still having the issue .......................its really annoying please help or suggest

apparently, note2 and sandisk dont get along well. i lost my 32gb class 10 card because my note fried it, and virgin mega-crap refused to return it
its pretty common so i guess you should replace it for a transcend or samsung one
http://forum.xda-developers.com/showthread.php?t=2060405
plus, the thanks button is for a reason

lesalloum said:
apparently, note2 and sandisk dont get along well. i lost my 32gb class 10 card because my note fried it, and virgin mega-crap refused to return it
its pretty common so i guess you should replace it for a transcend or samsung one
http://forum.xda-developers.com/showthread.php?t=2060405
plus, the thanks button is for a reason
Click to expand...
Click to collapse
but i have a 16gb of scandisk also but that nevcer gave me this problem ............strange ........
anyone else?

I'm having this problem too. Can't seem to find a solution anywhere. I have the 32GB SanDisk :crying:

Happened to me before 3 days later my SD card went dead , i was lucky i had a backup on my PC

Dark.Soul085 said:
Happened to me before 3 days later my SD card went dead , i was lucky i had a backup on my PC
Click to expand...
Click to collapse
i have switched to my 16gb scandisk again and no problem BUT would really like to solve my 32Gb problem . dont want to throw away my money

Help me...
My Micro SD Card brand Kingson 8GB Class 4 always ramdomly unmount and then remount on it own when screen in off. This is very annoying because my launcher will crash because I save some app on my sd card. I have formated it and the result still same.

happen to me too. still there is no solution for this?

Memory card problem dude!! I faced the same problem and got it replaced and now it works like a charm!!

jitin02 said:
Hi guys,
Searched all over before asking, didnt found anything thats why have created this thread.
anyways, i have 32GB Fat32 formated sdcard (scan disk).
I am facing strange issue................the sdcard unmounts and mounts by itself.........................
tried formating the sdcard via pc....................all settings to default (allocation size and all)............but still having the issue and also formated the phone But still having the issue .......................its really annoying please help or suggest
Click to expand...
Click to collapse
Format in Fat32 with this tool hopfuly everything will be fine.
https://www.sdcard.org/downloads/formatter_4/

jitin02 said:
Hi guys,
Searched all over before asking, didnt found anything thats why have created this thread.
anyways, i have 32GB Fat32 formated sdcard (scan disk).
I am facing strange issue................the sdcard unmounts and mounts by itself.........................
tried formating the sdcard via pc....................all settings to default (allocation size and all)............but still having the issue and also formated the phone But still having the issue .......................its really annoying please help or suggest
Click to expand...
Click to collapse
Can u pls tell us how do you solved the problem pls.

jdomadia said:
Can u pls tell us how do you solved the problem pls.
Click to expand...
Click to collapse
@jdomadia
:laugh::silly: SImple . I just bought a Samsung Class 6 32gb card
EDIT >> after that no unmountings or any problem, I think our note 2 really likes to have samsung sdcards in its p u s s y rather than any other co.

Ehhhhhhh... Seems like another fix cud be made

64 Gb unformattable
jdomadia said:
Can u pls tell us how do you solved the problem pls.
Click to expand...
Click to collapse
I have a similar situation. 64Gb Sandisk Ultra card unmounts while formatting. Cannot write files to the card. Reading is perfectly working. Tried formatting in pc. Not getting formatted. Tried several methods, like through dos etc. Still no change.

try formatting in camera or video recorder, it should format it wothout hesitation

yaro666 said:
try formatting in camera or video recorder, it should format it wothout hesitation
Click to expand...
Click to collapse
As of now, I don't have such equipments at disposal. I'll try to do that.

jitin02 said:
Hi guys,
Searched all over before asking, didnt found anything thats why have created this thread.
anyways, i have 32GB Fat32 formated sdcard (scan disk).
I am facing strange issue................the sdcard unmounts and mounts by itself.........................
tried formating the sdcard via pc....................all settings to default (allocation size and all)............but still having the issue and also formated the phone But still having the issue .......................its really annoying please help or suggest
Click to expand...
Click to collapse
I'm using aLenovo A7000 running on ressurection remix V5.5.9 in which i don't have the option to unmount my sd card.Please suggest me a way to do it and also while transferring files from my pc on my phone...i switched my phone from a mass storage device to the'charging only'option and after that my phone doesn't get recognised at all by my pc as a usb mass storage device.... And i can't even find those options anywhere in the settings and usb debugging also isn't working.Pls help me ASAP!

My 16gb SD card also does this. Before it started though, all of my music files on it became damaged, but would still play partially, then end prematurely. I think this may just be cheap ass SD manufacturing. I say just boycott SD and get the Samsung card.

Solution / Fix:
Install Wake Lock PowerManager on google play. Enable Partial_Wake_Lock then viola! No more unmounted / eject problems. The problem is everytime your mobile is in sleep mode, the unmounting error occurs.
Also install SD Card Monitor to check the counter of mounted/unmounted/ejected sdcard.
Hope this helps.

onimax said:
Solution / Fix:
Install Wake Lock PowerManager on google play. Enable Partial_Wake_Lock then viola! No more unmounted / eject problems. The problem is everytime your mobile is in sleep mode, the unmounting error occurs.
Also install SD Card Monitor to check the counter of mounted/unmounted/ejected sdcard.
Hope this helps.
Click to expand...
Click to collapse
Stupidest post 2016

SD card mount problem please help

I've been searching all over for a couple days now and I can't find any solution only people with similar but not exact same problem I'm having. Out of the blue a couple days ago the fat32 partition on my 32GB class10 patriot SD card unmounted and won't mount at all. However the ext4 partition mounts just fine and continues to work as it always has. I also can't plug the card directly into my PC because the adapter that came with the micro SD card appears to not work. My PC doesn't think there is an SD card in it. I tried it with a known good SD card (the 16GB samsung SD card that came with the phone. Which when inserted into the phone mounts and can be used like expected. No new apps where installed or changes made to my phone or the SD card before it stopped working correctly. The same apps and what not have been in use for as long as I have had the 32GB SD card. In fact the currently in use version of CM10.1 has been is use for the last month with no issue regarding the SD card. When I remove the card a notification shows up telling me to insert an SD card. And when I insert the 32GB card the checking SD card notification shows up an a second or two after the SD card is safe to remove notification shows up as if I had told it to unmount the SD card. If I tap on mount SD card in settings the same thing happens. And it also happens after a reboot. CWM can't mount the SD card either. What can I do to fix it so the fat32 partition is usable again?

StoneRyno said:
I've been searching all over for a couple days now and I can't find any solution only people with similar but not exact same problem I'm having. Out of the blue a couple days ago the fat32 partition on my 32GB class10 patriot SD card unmounted and won't mount at all. However the ext4 partition mounts just fine and continues to work as it always has. I also can't plug the card directly into my PC because the adapter that came with the micro SD card appears to not work. My PC doesn't think there is an SD card in it. I tried it with a known good SD card (the 16GB samsung SD card that came with the phone. Which when inserted into the phone mounts and can be used like expected. No new apps where installed or changes made to my phone or the SD card before it stopped working correctly. The same apps and what not have been in use for as long as I have had the 32GB SD card. In fact the currently in use version of CM10.1 has been is use for the last month with no issue regarding the SD card. When I remove the card a notification shows up telling me to insert an SD card. And when I insert the 32GB card the checking SD card notification shows up an a second or two after the SD card is safe to remove notification shows up as if I had told it to unmount the SD card. If I tap on mount SD card in settings the same thing happens. And it also happens after a reboot. CWM can't mount the SD card either. What can I do to fix it so the fat32 partition is usable again?
Click to expand...
Click to collapse
Have you tried formatting the SD card in recovery?

As I said I can't mount it with CWM either. The card contains the data for my mSecure passwords as that app was forced to the SD card due to JB changes in android so I can't format it until I can recover the data on it. I need a solution to access the data before I can reformat it assuming that it needs to be reformatted. The SD card was supposed to be this fail safe thing and I didn't need to make backups of it as it was the backup storage stuff. So now I'm all freaking out because I can't access it for all the backed up data on top of the data for one critical app that was forced to reside on it. The good news is that only a few apps data is effected by this the bad news is those apps were all very important. I just don't understand why this has happened. And if using a cloud source such as box will be any more secure and safe than using the SD card in light of this; now I don't trust not losing data in the future on a source that was supposed to not have this sort of thing happen.

Maybe the SD card just went bad. Sorry I couldn't be of more help.

DynamicN said:
Maybe the SD card just went bad. Sorry I couldn't be of more help.
Click to expand...
Click to collapse
No problem, it's a problem no easily solved, and is a long shot finding anyone who will be able to help. I looked at dozens of sites and forum threads and all sorts of other stuff from goggle searches and couldn't find a solution to get it to mount in either the phone or on my PC to recover the data from it and find out for sure if it is a bad card or not. It might still be under warranty. If it's not I'll be ticked considering how much it cost and how little time I've had it.

StoneRyno said:
No problem, it's a problem no easily solved, and is a long shot finding anyone who will be able to help. I looked at dozens of sites and forum threads and all sorts of other stuff from goggle searches and couldn't find a solution to get it to mount in either the phone or on my PC to recover the data from it and find out for sure if it is a bad card or not. It might still be under warranty. If it's not I'll be ticked considering how much it cost and how little time I've had it.
Click to expand...
Click to collapse
Try installing Recuva on your PC, if this program doesn't work for you then you might wanna try another more advanced recovery program like R-studio v6 (Shareware) which is easy to use since it's GUI based.
or testdisk-6.14-WIP (Freeware) which includes testdisk_win.exe for partition recovery and photorec_win.exe for files and media recovery, but it's kinda complicated since it's based on Command Prompt or DOS! so you need to google for a guide for how to use it.

StoneRyno said:
No problem, it's a problem no easily solved, and is a long shot finding anyone who will be able to help. I looked at dozens of sites and forum threads and all sorts of other stuff from goggle searches and couldn't find a solution to get it to mount in either the phone or on my PC to recover the data from it and find out for sure if it is a bad card or not. It might still be under warranty. If it's not I'll be ticked considering how much it cost and how little time I've had it.
Click to expand...
Click to collapse
Are you still having the problem? I had the same problem, and I found a solution to it.

chromeplaya said:
Are you still having the problem? I had the same problem, and I found a solution to it.
Click to expand...
Click to collapse
Wow I somehow never got notified of this post seeing as I'm just now noticing a reply from months ago. Yes I still can't mount the SD card. I took it out and returned to the stock one that came with my phone. I still have the card as I need to recover the data from it and if not possible wipe it somehow so that I can warranty exchange it. Please do let me know what your solution is so that I can try it and see if it works.

Refresh my memory on what the problem was. This was a while ago lol.

chromeplaya said:
Refresh my memory on what the problem was. This was a while ago lol.
Click to expand...
Click to collapse
The SD card won't mount in my samsung epic and my windows PCs. This was a sudden without warning signs and with no apparent cause. One moment it was fine and the next moment poof. I was looking for a solution to gain access to the files on it to recover whatever I can and if possible repair the card so that it works again. Assuming that it's not a failure of the card itself. It is within the warranty and well within the life expectancy of it. So I suspect it is not a failure of the card itself. I have the option of using ubuntu or other USB stick bootable options for tools as needed.

most of app won't read SDCard

Hi...
This is my first post here.
I have a problem with my SD Card.
My SDCard: 32GB microSDHC, some application like music player and gallery sometimes can't read file on my ext sd card (but my file manager can do it flawlessly)
Furthermore, sometimes it shows PREPARING SD CARD on top of the screen, although I don't even do anything. I tried to re-mount it again. But the problem still sometime occurs.
This problem started happening when I changed my stock rom to Ressurection Remix, I thought this problem occurred because of the ROM. so I change it to AOSP. But still... the problem still existed. So then, I changed it back to my stock ROM (with restore option in CWM)
But yeah... Nothing happen.
Any idea?
P.S.: Sorry for my bad english.

extSdCard/sdcard 1 issues
I have a Note II N1907 (ATT) running Liquid Smooth with a SanDisk microSD ultra 32gb. I have been trying to figure this issue out since I bought this phone 2 months ago. I screwed up the original card that I transferred from my old phone some how by trying different things to make the phone recognize it. It worked fine in my HTC Vivid. I have root and am able to use root options to try to access this card of installation, but the best I have been able to do is use it for storage. And I have to manually move things to the card, because most apps do not acknowledge that it is there (can't see it). TWRP recovery can see it after I did my first ROM Flash, but I have to use internal memory for my first ROM Flash, because recovery mode was unable to mount extSdCard.
Is there a kernel I can flash to remedy this. I am no developer, but I think the problem is that the internal memory is also SD in type. I have noticed that internal memory shows up as SDcard0 (zero) and the after market sd card is sdcard1. Maybe the phone automatically defaults to the first sdcard and ignores the other (because it is only designed to have one sd card).
I am sure others have hard this problem with this phone. Thank you for any help you can offer..

floykoe said:
I have a Note II N1907 (ATT) running Liquid Smooth with a SanDisk microSD ultra 32gb. I have been trying to figure this issue out since I bought this phone 2 months ago. I screwed up the original card that I transferred from my old phone some how by trying different things to make the phone recognize it. It worked fine in my HTC Vivid. I have root and am able to use root options to try to access this card of installation, but the best I have been able to do is use it for storage. And I have to manually move things to the card, because most apps do not acknowledge that it is there (can't see it). TWRP recovery can see it after I did my first ROM Flash, but I have to use internal memory for my first ROM Flash, because recovery mode was unable to mount extSdCard.
Is there a kernel I can flash to remedy this. I am no developer, but I think the problem is that the internal memory is also SD in type. I have noticed that internal memory shows up as SDcard0 (zero) and the after market sd card is sdcard1. Maybe the phone automatically defaults to the first sdcard and ignores the other (because it is only designed to have one sd card).
I am sure others have hard this problem with this phone. Thank you for any help you can offer..
Click to expand...
Click to collapse
As soon as I saw your reply I scanned for the words "Sandisk Ultra" and then I knew this was your issue.
I had a lot of SD card corruption with this brand and searching a lot on the web I found many stories of people having the same issues as I did.
My 32Gb Sandisk Ultra was the cause of many of my problems. 2 months on with a Lexar 32Gb, no problems (touch wood)

SD Unexpectedly Removed - NO Remount

Ive searched the forums here as well as google, and find many S3 users facing a Verrrrry similar problem, where their SD card is "Unexpectedly Removed" and then Remounts itself, and the process repeats, causing battery drainage, loss of access to apps etc.. Mostly Related to a SanDisk manufacturing default with certain chips.
My problem however, is slightly unique, in that, mine does not remount itself once it has been "removed". Once physically removed, and checked on a PC, all my files are still there, in working order. Ive Formatted, both "quick" and full format to Fat32, and the card works fine for about an hour to maybe a whole night if Ive done it right before bed. It seems as soon as it starts to be accessed in any way for more than ten minutes, it gets "removed".
Ive tried the following to try and remedy the problem. (Im fairly broke so buying a new card is last resort in my case)
-Both Formats of the card several times.
-Put it in another phone which reads it, format, unmount safely, mount into my phone, and no luck, doesnt even see it
-Factory Reset incase of any bugs in software that may be causing a malfunction of any kind
-Full Wipe X3 + Change of ROM
Im going to be borrowing a friends card for the night tonight, a spare 2GB he has, and see if the phone repeats the error, or if it really is fault of the SD card in question.
Phone Specs
Rogers S3
Running Darth Stalker 4.1.2? and now AoCP_By_The_Collective5.95 4.2.2
Kernel:3.4.53-cyanogenmod-g361781f
SD Card: Lexar 16GB Class 4 Micro SD HC
Anyone have any ideas as to what may be causing the problem? or does it really sound like the card is at fault? I question this only because the card works elsewhere, and works in my phone for the first little while, with or without files on it, after I format it..
I'll report back about the other card tonight.
Any Suggestions would be greatly appreciated, as I cant find this problem solved in any way, anywhere :s

Once you report back and if the new card works it sounds like the card. But if the second card fails it sounds like a hardware issue only if you tried different ROMS and kernels and going back to stock by using Odin.
Sent from my SAMSUNG-SGH-I747 using Tapatalk 4 Beta

Bruce Lee said:
Once you report back and if the new card works it sounds like the card. But if the second card fails it sounds like a hardware issue only if you tried different ROMS and kernels and going back to stock by using Odin.
Sent from my SAMSUNG-SGH-I747 using Tapatalk 4 Beta
Click to expand...
Click to collapse
I am experiencing a similar issue, but my pc wont recognize the sd card neither :crying:
Do you know how can I fix it?
thank you

64gb micro SD problems

I'm running Jasminerom 4.0 and I cannot get 64gb micro sd cards to work properly on my VS985. If I format via settings, it defaults to exfat. Performance suffers and I seem to get random corruption of files. I've tried formatting to fat32 via TWRP and via Windows. Performance is better for a bit, but in time the phone starts not writing to the card for some reason. I've tried 2 different cards, Samsung evo and SanDisk ultra. I'm currently using a 32gb SanDisk ultra which works as it should.
Any others have this problem with 64gb cards?

blueblazer22x said:
I'm running Jasminerom 4.0 and I cannot get 64gb micro sd cards to work properly on my VS985. If I format via settings, it defaults to exfat. Performance suffers and I seem to get random corruption of files. I've tried formatting to fat32 via TWRP and via Windows. Performance is better for a bit, but in time the phone starts not writing to the card for some reason. I've tried 2 different cards, Samsung evo and SanDisk ultra. I'm currently using a 32gb SanDisk ultra which works as it should.
Any others have this problem with 64gb cards?
Click to expand...
Click to collapse
Yes i have this problem too. I somehow semi-repaired files corruption by formating the 64GB card with Easues partition manager. Format it with this program as FAT32 and see if it helps.

Thanks I'll try that and let you know how I make out.
Using a 32gb card is an ok workaround but this problem really bugs me. I'm hoping the lollipop update might fix this issue. We'll see...

blueblazer22x said:
Thanks I'll try that and let you know how I make out.
Using a 32gb card is an ok workaround but this problem really bugs me. I'm hoping the lollipop update might fix this issue. We'll see...
Click to expand...
Click to collapse
Like mentioned above, formatting your card to 2x fat32 partitions should fix it. The problem is with exFAT. I doesn't see it as a removable memory and ends up getting corrupted, sometimes, a reboot will fix it but after a while, it needs a fresh format.
I'm thinking the problem is with the kernel as stock didn't give me issues, could be wrong though. I know CM broke it last week so ROM that are base off it would have it broken as well but could be fixed by now.

I used Easeus to format to fat32. The card worked great this weekend.
This morning I checked for some files and several entire directories had been deleted. Looks like I'm having the same issues as before, and I really don't know what is triggering it. I'll stick with my 32gb card for now.

has anyone found a solution for this I've bought several different top of the line cards, anything over 32gb stuff gets corrupt.
appreciate any help, thanks in advance