[Q] extSD woes. - Galaxy S III Q&A, Help & Troubleshooting

Whenever I flash a ROM onto my I9300 the extSD card will not mount. According to whatever ROM I use the card cannot be read or is corrupt. It works fine in stock JB, however when I restore the device to stock JB it then states the card needs formatting and I have to go through the process of chucking all my music back onto the card after I format (which I'm doing right now).
The card I'm using is a Sandisk Ultra 64GB Class 10. I'm able to make backups and restore from them on the card itself through PhilZ Touch as CWM wouldn't read the card either and some other users suggest I try PhilZ recovery as they've had similar problems. Has anyone else had this problem and is willing to offer a solution? If so what card do you use?
I've heard flashing back to ICS which will write a different mount code than the one JB writes to a device, and somehow this will fix future mounting problems. I don't know how much of this is true but you can read the article here: http://checkrom.com/threads/cant-mount-internal-sd-card.994/

non Sammy based Roms only support fat32

Related

[Q] After flashing CM7 - SD Card inaccessible

[email protected]!
Today I decided to flash CM7 onto my SGS2. I had the Stock Samsung 2.3.4 Rom with CF-Root Kernel on it. After flashing through CWM I got stuck at the boot logo, but I was able to re-flash it properly through CWM. But now, I can't access the inserted 8GB SD Card (except for Root explorer). So I reflashed CM7, but that didn't solve the SD Card problem. I asked Google what to do, but most of the solutions posted in forums etc. are for other devices (e.g. HTC Devices). I already picked up some key words like "emmc" or something like that, but I don't know if this has something to do with this problem. I am experienced with flashing (Galaxy 3 i5800, Galaxy S i9000) and it's possible dangers, but I've never encountered something similiar to this problem.
So, is there a possibility to fix things back to normal? I can access the internal and external SD card with my PC/Laptop and Root Explorer, and all the Files are still there and neither seem to be damaged nor corrupted.
Yours, BlackWire
Edit: I tried the following Cyanogenmod 7 External Sd Card problem, but still I can't access the SD Card with the OI File Manager (i don't know what it's called in english) or other apps.
Edit2: I can't even flash another ROM through CWM, as I can't access the external SD Card!

[RECOVERY] ClockworkMod Touch 6.0.1.0 cant recognise my sd card

How come i cant back up to external sd card. it says it cant mount backup path. i got a 64gb sdxc card class 10. i thought this version supported external sd card
im using a uk unbranded s3 on stock samsung firmware
do i have to format and partition the sd card using cwm first and then try to backup to sd card. the sd card as of now is ex-fat
Exactly the same problem here, installed CWM touch and it can't recognise my 16GB card, 8GB or 2GB. I reckon its because samsung have named it Exsdcard or something like that instead of emmc or whatever its meant to be.
boarder.2k9 said:
Exactly the same problem here, installed CWM touch and it can't recognise my 16GB card, 8GB or 2GB. I reckon its because samsung have named it Exsdcard or something like that instead of emmc or whatever its meant to be.
Click to expand...
Click to collapse
I already had a thread like this one
http://forum.xda-developers.com/showthread.php?t=1798262
This was my ONLY solution...
1. I RE-Rooted with CF Root 6.4
( it installs CWM 5.5.0.4)
Everything perfect....
BUT if I try to Upgrade CWM 5.5. --- to --- 6.0
Then I have the MOUNTING PROBLEM
So I have to (ONLY) :
1. Re-Root again with CF Root 6.4
And Everything goes back to NORMAL...
yep exactly. only way is to use CF-root and that cwm mod works on the micro sdxc card. eff the touch version
Well the touch version works very well for me. It shows the sdcard and external sdcard so I am at a loss as to why yours does not work. I have the international version and on the omega v10 rom.
I am having a similar problem. External SDcard is no longer recognised for me on ANY touch version.
Had no trouble on non touch one that came with omega under v10. I installed CWM touch through rom manager on Omega v9, when I upgraded to v10 the CWM stayed the same. Then messing about some more seeing which version I prefered I ended up installing a few versions before settling with Rom manager touch version.
At the beginning, first use of CWM touch, external card mounted fine and could backup to it. Somewhere between then and now I have lost the ability to mount sdcard.
I have performed full wipes of everything and reinstalled numerous times but no matter what I do now, CWM touch will not load extsdcard.
My theory is there must be some config file or something somewhere that needs to be deleted that is stopping CWM touch from properly choosing the correct path. If it's not that, then I have no clue wt* is going on.
EDIT: Know I could just use the non touch version, but I prefer the blob backup system, could care less about the touch feature personally.

CWM Recovery and External SD card... still no go

Hi all,
I've been rooting Android phones (mostly Samsung) and installing CWM etc for as long as one has been able to. This is the first time I've had any major issues.
Issue being, no matter which CWM I install that states it supports external SD on i9300, I still can't install from zip on ext sd, or backup too it, or mount it!!!
Everyone else seems to be able to fine, but for some reason for me, following the same instructions step by step (tripple checked just to be sure) I cannot.
Now I did initially root the device relatively early on in the development stages for it, and installed a criskello rom (v6) about a month ago. Other than that, I've not played around with anything at all. Today I decided I'd try to install a new rom which I'd saved on the device to the external SD. But no, the CWM I had (6.0.1.0 I think) couldn't read ext sd.
Thus, I installed CWM 6.0.1.2 via Odin (following instructions found here: http://forum.xda-developers.com/showthread.php?t=1719744 )
But apparently for some crappy reason I have to be the odd one out, for whom it refuses to work!
Now, just to be sure, i've tried multiple SD cards, all just basic fat format, even reformated them all on the device itself. But nope, it just refuses to work for me!!!
Anyone got any suggestions or am I just doomed to internal memory only?
I'd REALLY like to be able to backup my device before trying new roms
This problem nevf happened to me. I can restore any backup ive saved.
Maybe its a crisckeloRom related problem.
Sent from my GT-I9300 using xda premium
fr0dzy said:
Hi all,
I've been rooting Android phones (mostly Samsung) and installing CWM etc for as long as one has been able to. This is the first time I've had any major issues.
Issue being, no matter which CWM I install that states it supports external SD on i9300, I still can't install from zip on ext sd, or backup too it, or mount it!!!
Everyone else seems to be able to fine, but for some reason for me, following the same instructions step by step (tripple checked just to be sure) I cannot.
Now I did initially root the device relatively early on in the development stages for it, and installed a criskello rom (v6) about a month ago. Other than that, I've not played around with anything at all. Today I decided I'd try to install a new rom which I'd saved on the device to the external SD. But no, the CWM I had (6.0.1.0 I think) couldn't read ext sd.
Thus, I installed CWM 6.0.1.2 via Odin (following instructions found here: http://forum.xda-developers.com/showthread.php?t=1719744 )
But apparently for some crappy reason I have to be the odd one out, for whom it refuses to work!
Now, just to be sure, i've tried multiple SD cards, all just basic fat format, even reformated them all on the device itself. But nope, it just refuses to work for me!!!
Anyone got any suggestions or am I just doomed to internal memory only?
I'd REALLY like to be able to backup my device before trying new roms
Click to expand...
Click to collapse
CWM 6 and onwards is known to not play well with external SD's, despite what they say, since the layout is a little bit different in Samsung phones. Try flashing Chainfire's CF-root package, which will provide you with root (of course) and CWM 5, which works well with external SD's. You have my guarantee.
BUT! If your SD card is somehow damaged, nothing will read it properly. Make sure it actually works, and that is has a format your phone understands:
32 GB and up, and running stock Samsung = exFAT
32 GB and up, and running an AOSP ROM = FAT32
Anything less than 32GB = FAT32
Theshawty said:
CWM 6 and onwards is known to not play well with external SD's, despite what they say, since the layout is a little bit different in Samsung phones. Try flashing Chainfire's CF-root package, which will provide you with root (of course) and CWM 5, which works well with external SD's. You have my guarantee.
BUT! If your SD card is somehow damaged, nothing will read it properly. Make sure it actually works, and that is has a format your phone understands:
32 GB and up, and running stock Samsung = exFAT
32 GB and up, and running an AOSP ROM = FAT32
Anything less than 32GB = FAT32
Click to expand...
Click to collapse
Hey,
I have the same issue as fr0dzy. I'm ran Chainfire's CF-root package with CWM 5.5.0.4 and i can't use my ext-sdcard in recovery (to install zips + nandroid backup/restore). My ext is a 64gb card formatted to FAT32 but i can use it when i boot my rom.
Any suggestions would be really appreciated. Thanks.
fr0dzy said:
Hi all,
I've been rooting Android phones (mostly Samsung) and installing CWM etc for as long as one has been able to. This is the first time I've had any major issues.
Issue being, no matter which CWM I install that states it supports external SD on i9300, I still can't install from zip on ext sd, or backup too it, or mount it!!!
Everyone else seems to be able to fine, but for some reason for me, following the same instructions step by step (tripple checked just to be sure) I cannot.
Now I did initially root the device relatively early on in the development stages for it, and installed a criskello rom (v6) about a month ago. Other than that, I've not played around with anything at all. Today I decided I'd try to install a new rom which I'd saved on the device to the external SD. But no, the CWM I had (6.0.1.0 I think) couldn't read ext sd.
Thus, I installed CWM 6.0.1.2 via Odin (following instructions found here: http://forum.xda-developers.com/showthread.php?t=1719744 )
But apparently for some crappy reason I have to be the odd one out, for whom it refuses to work!
Now, just to be sure, i've tried multiple SD cards, all just basic fat format, even reformated them all on the device itself. But nope, it just refuses to work for me!!!
Anyone got any suggestions or am I just doomed to internal memory only?
I'd REALLY like to be able to backup my device before trying new roms
Click to expand...
Click to collapse
I'm on a SGS2 Epic4g Touch- same issue. Rooting it everything runs fine, after installing CWM Agat Recovery through mobile Odin I lose access to all apps on Ext SD, something is definitely not playing right with the card. Have you found a work around?
---------- Post added at 10:07 PM ---------- Previous post was at 09:55 PM ----------
This is my first time rooting and running CWM--- is this issue with phones that have both an Ext SD and a internal MMC partition labeled SD? Thanks for any help, guys!
Solved for me!
Theshawty said:
CWM 6 and onwards is known to not play well with external SD's, despite what they say, since the layout is a little bit different in Samsung phones. Try flashing Chainfire's CF-root package, which will provide you with root (of course) and CWM 5, which works well with external SD's. You have my guarantee.
BUT! If your SD card is somehow damaged, nothing will read it properly. Make sure it actually works, and that is has a format your phone understands:
32 GB and up, and running stock Samsung = exFAT
32 GB and up, and running an AOSP ROM = FAT32
Anything less than 32GB = FAT32
Click to expand...
Click to collapse
This last piece of text solved my problem, thank you! I formatted my 2 GB card as FAT32 and installed a custom ROM (4.1.2 Stock) to recover from a broken Ubuntu Touch ROM.
It was a relief!
bruno.drugowick said:
thank you!
Click to expand...
Click to collapse
there's a button for that

CWM 6.0.2.7 - 64 GB ext SD card, Unable to mount / format / access, etc.

Hi there,
I have the following issue and hope to find somebody with a solution here in the XDA-world...would be great.
Of course I did some searching before I post here, but the results are not sufficient for me...
I am using a 64 GB external SD card in my Samsung Galaxy S III since a few days. Before I put data to the card, I performed a format via the phone itself. The access works great - I can use all my files when I use the phone in normal operation. (with Ultima Rom).
Today I downloaded the latest ROM release and wanted to flash it via CWM 6.0.2.7 and I encountered a problem - I cannot access the external SD card in CWM recovery. It simply say´s "Can´t mount external SD".
Why is it? Any solution proposals? I used to have a 2GB card and the installations worked fine with CWM here....
Is it a wrong formatting probably? Or the size?
Thanks for any suggestions!!!
You should do some search before post, but since you are here, I give you some briefly information, but you have to search more details yourself.
1. 64 GB sdcard is formated in exFAT file system which CWM recovery doesn't support it, that's why you have problem with 64 , but OK with 2GB sdcard. (Some latest recovery has now support exFAT I think )
2. Solution, format your sdcard into FAT32 file system, or change to 32 GB sdcard because unless you have countless files or blue ray movies otherwise you won't need 64GB at all, that's what I did, I had 64 and change to 32 to avoid any kinda potential problem
Sent from my GT-I9300 using xda premium
Dotterdroid said:
Hi there,
I have the following issue and hope to find somebody with a solution here in the XDA-world...would be great.
Of course I did some searching before I post here, but the results are not sufficient for me...
I am using a 64 GB external SD card in my Samsung Galaxy S III since a few days. Before I put data to the card, I performed a format via the phone itself. The access works great - I can use all my files when I use the phone in normal operation. (with Ultima Rom).
Today I downloaded the latest ROM release and wanted to flash it via CWM 6.0.2.7 and I encountered a problem - I cannot access the external SD card in CWM recovery. It simply say´s "Can´t mount external SD".
Why is it? Any solution proposals? I used to have a 2GB card and the installations worked fine with CWM here....
Is it a wrong formatting probably? Or the size?
Thanks for any suggestions!!!
Click to expand...
Click to collapse
1. Use PhilZ Touch recovery (based on 6.0.2.8 - I think 6.0.2.7 was also very buggy - and with a new Samsung kernel supporting exFAT).
2. Format as FAT32.
I am currently using the 1st approach, but keep in mind that many ROMs (mostly based on CM10 stuff) still have a huge bug where the exFAT partition is not recognized but instead some stuff is written to the first sector - when that takes place just put the exFAT card in a SD-reader in Win7/8, reject any suggestion to format it and then from the command line run CHKDSK /F Letter:
Thank you!!!
Thanks a lot to both of you!!! It worked out! :highfive:
I also managed to search for "how to format an SDCard to FAT32", no problem.
To be honest I also had a look for a possible solution like you suggested prior to my post --> I just was not confident that these suggestions will solve the issue since I read many times "tried - but no success"...
I just wanted to be sure, coming back from work, not to spend hours to solve it, if you already have "the one working" solution available. Once again many thanks - I really appreciate this community, even if its my 2nd active post...

[ME7 sd card format ??s

Currently using a Samsung 64gb micro card formatted fat32 - questions
(1) Does it need to be formatted exfat to take advantage of the TW ME7 updated ROMs? and if so,
(2) Will I still be able to access non TW ROMs with an exfat formatted card? Lastly
(3) Any advantage having a sd-ext partition? Used this with apps2sd pre S4
Tried searching - honestly couldn't find direct answers
tkacer said:
Currently using a Samsung 64gb micro card formatted fat32 - questions
(1) Does it need to be formatted exfat to take advantage of the TW ME7 updated ROMs? and if so,
(2) Will I still be able to access non TW ROMs with an exfat formatted card? Lastly
(3) Any advantage having a sd-ext partition? Used this with apps2sd pre S4
Tried searching - honestly couldn't find direct answers
Click to expand...
Click to collapse
Are you currently on MDK and plan to run ME7 based custom ROM's? If so then you can do custom ROM's. I would format your 64GB card to exFAT anyways given the fact that it supports larger file sizes like movies, etc. I don't see why you wouldn't be able to access the exFAT card with any ROM since I have stock TW ME7 rooted and my card is a Samsung 64GB exFAT format. I hope that helps some.
Raptor -
Tried some ME7 Rom's but they seemed not to be moving the apps to the sd card correctly - when I tried to move them manually, I got a "unable to move - card full" error msg.
I thought perhaps this was because of the fat32 format.
Also like to go back and forth between TW and AOSP Rom's and I thought I read that AOSP kernels don't support exfat????? Also need to check that the recovery I'm using (OUDHs CWM 1.0.3.5) supports exfat. I recall being unable to get it to recognize my card until it was formatted fat32.
Thanks for the reply!
I wonder if there is something in how Samsung wrote that ability into the ROM and the devs may be having an issue with finding the right hooks.
RaptorMD said:
I wonder if there is something in how Samsung wrote that ability into the ROM and the devs may be having an issue with finding the right hooks.
Click to expand...
Click to collapse
Could be - I guess I could back up my card, reformat exfat, and give it go. Unfortunately, I'd have to switch recoveries - Shabbypenguin's recovery does not support exfat. Probably give TWRP a go.......
tkacer said:
Could be - I guess I could back up my card, reformat exfat, and give it go. Unfortunately, I'd have to switch recoveries - Shabbypenguin's recovery does not support exfat. Probably give TWRP a go.......
Click to expand...
Click to collapse
I am not familliar with Shabbypenuin's recovery tool, but TWRP has been awesome for me on the last several Android phones. I would give that a go.
RaptorMD said:
I am not familliar with Shabbypenuin's recovery tool, but TWRP has been awesome for me on the last several Android phones. I would give that a go.
Click to expand...
Click to collapse
It has more to do with the Kernel than the actual ROM. Most custom kernels are now supporting ExFat. The only one I have tried lately that doesn't is Elites Kernel but I am sure that will change soon.

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