sdcard can't mount

harmonica.ss · Apr 2, 2014

Hi ,

This is new my first post.

I have samsung SGH-i777 initiallly when i bought it has 4.3& it has 16GB card. cyanogenmod10.2 with rooted. but it always restarted because of OOM.
so i installed kitkat 4.4 omnirom and few day it was working good,no problem arise. after week it doesn't show external storage it only show internal storage of 2GB. so again flashed ROM this time with 4.1 & it shows 16GB memory then i could use those space. but problem is if i go to CWM revcovery(i tried latest or old versions) take backup or installing zip got error like this "sdcard can't mount"

kindly help me out of this issue.

Thx

cyril279 · Apr 2, 2014

Switching to a different kernel/recovery affects whether the card can be mounted? This sounds like the CWM recovery that you chose doesn't support the filesystem of the Sd Card.

What file system is the SD card using?
For greatest compatibility, I suggest formatting the external Sd Card to Fat32.

If you're going to stay on 4.4, AND if you plan on playing music from the sdcard, I suggest formatting it to exfat (successful workaround for a KK bug).
^^beware, the stock recovery and firmware will NOT be able to read any exfat formatted partition
^^once formatted to ExFat, apps will install to the external SD, but will not survive reboot (keep them on the internal SD)

welcome to XDA,
happy flashing
-Cyril

harmonica.ss said:
Hi ,

This is new my first post.

I have samsung SGH-i777 initiallly when i bought it has 4.3& it has 16GB card. cyanogenmod10.2 with rooted. but it always restarted because of OOM.
so i installed kitkat 4.4 omnirom and few day it was working good,no problem arise. after week it doesn't show external storage it only show internal storage of 2GB. so again flashed ROM this time with 4.1 & it shows 16GB memory then i could use those space. but problem is if i go to CWM revcovery(i tried latest or old versions) take backup or installing zip got error like this "sdcard can't mount"

kindly help me out of this issue.

Thx

harmonica.ss · Apr 3, 2014

Sdcar can't mount

cyril279 said:
Switching to a different kernel/recovery affects whether the card can be mounted? This sounds like the CWM recovery that you chose doesn't support the filesystem of the Sd Card.

What file system is the SD card using?
For greatest compatibility, I suggest formatting the external Sd Card to Fat32.

If you're going to stay on 4.4, AND if you plan on playing music from the sdcard, I suggest formatting it to exfat (successful workaround for a KK bug).
^^beware, the stock recovery and firmware will NOT be able to read any exfat formatted partition
^^once formatted to ExFat, apps will install to the external SD, but will not survive reboot (keep them on the internal SD)

welcome to XDA,
happy flashing
-Cyril

Hi,

Thanks for your reply.

This is my sdcard partition

/dev/block/vold/259:3 /storage/sdcard0 vfat rw,dirsync,nosuid,nodev,noexec,noati
me,nodiratime,uid=1000,gid=1015,fmask=0002,dmask=0002,allow_utime=0020,codepage=
cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro,discard 0 0

cyril279 · Apr 3, 2014

The total size of the internal storage of the i777 is 15.8 GB, and it is partitioned as shown in the table below.
From: Settings > Storage, you should see reports for:
- "INTERNAL STORAGE" ~2GB
- "INTERNAL STORAGE" ~11.5GB
- IF you have an SD Card installed, you should see a third report named "SD CARD"

(Using the partition table as reference)
The first "internal storage" is partition #10, or /dev/block/mmcblk0p10
The second "internal storage" is partition #11, or /dev/block/mmcblk0p11
The SD Card is not captured in the partition table below, but if installed, would be found at /dev/block/mmcblk1 or /dev/block/mmcblk1p1

I'm not sure how to interpret your partition report, because it appears that it is reporting the statistics of the internal memory module, and NOT of a particular partition, which is more valuable to us.

-What do you see in Settings > Storage?

Stock I777 Partition Table:

Code:

Model: MMC VYL00M (sd/mmc)
Disk /dev/block/mmcblk0: 15.8GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt

Number  Start   End     Size    File system  Name       Flags
 1      4194kB  25.2MB  21.0MB  ext4         EFS
 2      25.2MB  26.5MB  1311kB               SBL1
 3      27.3MB  28.6MB  1311kB               SBL2
 4      29.4MB  37.7MB  8389kB               PARAM
 5      37.7MB  46.1MB  8389kB               KERNEL
 6      46.1MB  54.5MB  8389kB               RECOVERY
 7      54.5MB  317MB   262MB   ext4         CACHE
 8      317MB   333MB   16.8MB               MODEM
 9      333MB   870MB   537MB   ext4         FACTORYFS
10      870MB   3018MB  2147MB  ext4         DATAFS
11      3018MB  15.2GB  12.2GB  fat32        UMS
12      15.2GB  15.8GB  537MB   ext4         HIDDEN

harmonica.ss said:
Hi,

Thanks for your reply.

This is my sdcard partition

/dev/block/vold/259:3 /storage/sdcard0 vfat rw,dirsync,nosuid,nodev,noexec,noati
me,nodiratime,uid=1000,gid=1015,fmask=0002,dmask=0002,allow_utime=0020,codepage=
cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro,discard 0 0

harmonica.ss · Apr 4, 2014

Hi,

This is my partitions of my phone,

mount
rootfs / rootfs ro,relatime 0 0
tmpfs /dev tmpfs rw,nosuid,relatime,mode=755 0 0
devpts /dev/pts devpts rw,relatime,mode=600 0 0
proc /proc proc rw,relatime 0 0
sysfs /sys sysfs rw,relatime 0 0
none /acct cgroup rw,relatime,cpuacct 0 0
tmpfs /mnt/asec tmpfs rw,relatime,mode=755,gid=1000 0 0
tmpfs /mnt/obb tmpfs rw,relatime,mode=755,gid=1000 0 0
none /dev/cpuctl cgroup rw,relatime,cpu 0 0
/dev/block/mmcblk0p9 /system ext4 ro,relatime,barrier=1,data=ordered 0 0
/dev/block/mmcblk0p7 /cache ext4 rw,nosuid,nodev,noatime,barrier=1,journal_async
_commit,data=ordered 0 0
/dev/block/mmcblk0p1 /efs ext4 rw,nosuid,nodev,noatime,barrier=1,journal_async_c
ommit,data=ordered 0 0
/dev/block/mmcblk0p12 /preload ext4 ro,nosuid,nodev,noatime,barrier=1,data=order
ed 0 0
/dev/block/mmcblk0p10 /data ext4 rw,nosuid,nodev,noatime,errors=panic,barrier=1,
journal_async_commit,data=ordered,noauto_da_alloc,discard 0 0
/sys/kernel/debug /sys/kernel/debug debugfs rw,relatime 0 0
/dev/block/vold/259:3 /storage/sdcard0 vfat rw,dirsync,nosuid,nodev,noexec,noati
me,nodiratime,uid=1000,gid=1015,fmask=0002,dmask=0002,allow_utime=0020,codepage=
cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro,discard 0 0

When i see in storage,it shows like

Total space -> 1.97 GB

USB Storage --> 11.36GB

razen_kain · Apr 4, 2014

@cyril279 you should make reference thread on this subject. I'm going to have to bookmark this in case i need it later. Damn....

cyril279 · Apr 4, 2014

So CM 10.2 crashed a lot; Omni drops emmc (embedded multimedia card) after one week; 4.1 works fine until you change CWM recovery, and your partition report seems to be spitting back that your internal storage partition (emmc) is formatted as vfat.

It is entirely possible that your partition-reporter is calling a FAT32 partition VFAT, at which point there's nothing wrong with the partition format, and I have no idea what your i777 is going through. Based on the information provided, It sounds to me as though your internal Sd Card partition is formatted to something that is causing issues running the firmwares and kernels that you have chosen,

If the partition format is indeed the issue, then the solution is to backup the contents of emmc, format mmcblck0p11 to FAT32, and try your favorite firmware/kernel again.

I suggest that you verify the file system of the internal sdcard, using a different means than you have been.

The difference in FAT and FAT32 is well documented, but I am unclear on the importance of the differences in between VFAT and FAT32. A quick google session has lead me to understand that they are NOT the same, but quite a few threads in various forums seem to refer to them interchangeably.

Maybe I'm completely on the wrong path here, I welcome any input.

harmonica.ss said:
[...]when i bought it has 4.3& it has 16GB card. cyanogenmod10.2 with rooted. but it always restarted because of OOM.
so i installed kitkat 4.4 omnirom and few day it was working good,no problem arise. after week it doesn't show external storage it only show internal storage of 2GB. so again flashed ROM this time with 4.1 & it shows 16GB memory then i could use those space. but problem is if i go to CWM revcovery(i tried latest or old versions) take backup or installing zip got error like this "sdcard can't mount"[...]

SteveMurphy · Apr 4, 2014

cyril279 said:
Maybe I'm completely on the wrong path here, I welcome any input.

No, you're on your OWN path. That was great, razen's right: you should consider creating a reference guide and we could get it stickied. As new users come in (which amazes me, due to the age of our device), it would be a wonderful asset to have a reference written by someone who understands this.

Great post!

cyril279 · Apr 7, 2014

SteveMurphy said:
No, you're on your OWN path.

...That's the part that concerns me, I'm not totally convinced that this issue should have lead me in this direction, but the only time I've ever had an issue with firmware recognizing the SD Card was when I started playing around with formatting partitions, so it seemed reasonable. Looking back, the original post points several directions all at once, and without a more systematic approach (like installing the firmware clean, then installing one app at a time, NOT from TiBu backup) we won't know what the real issue(s) is/are/were.

That was great, razen's right: you should consider creating a reference guide and we could get it stickied. As new users come in (which amazes me, due to the age of our device), it would be a wonderful asset to have a reference written by someone who understands this.

These handsets are old, but when my wife and I finally decided that we wanted smart-phones, the i777 met the criteria of inexpensive, well-rated, dual-core, and well-supported, Android devices. Regarding a reference post, I managed to cobble-together a rough understanding from guides for other devices, but my understanding on the partition madness still isn't the strongest. Either way, I certainly don't mind compiling what I've found into something concise and specific to the i777.

cyril279 · Apr 9, 2014

harmonica.ss, are you still there? don't give up on me just yet.

I did finally get a chance to check the "mount" stats of my wife's i777, which also reports the user-storage partition as vfat. Her i777 has spent significant time on SHostock3, cm 10.1.3, & Omni 4.4; all without internal storage issues.

harmonica.ss said:
[...]so again flashed ROM this time with 4.1 & it shows 16GB memory then i could use those space. but problem is if i go to CWM revcovery(i tried latest or old versions) take backup or installing zip got error like this "sdcard can't mount"[...]

What kernel, and what firmware are you using? <-- this should have been my first question.

from my wife's i777:

Code:

/dev/block/vold/259:3 /mnt/media_rw/sdcard0 vfat rw,dirsync,nosuid,nodev,noexec,relatime,uid=1023,gid=1023,fmask=0007,dmask=0007,allow_utime=0020,codepage=cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro 0 0
/dev/block/vold/259:3 /mnt/secure/asec vfat rw,dirsync,nosuid,nodev,noexec,relatime,uid=1023,gid=1023,fmask=0007,dmask=0007,allow_utime=0020,codepage=cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro 0 0
/dev/fuse /storage/sdcard0 fuse rw,nosuid,nodev,relatime,user_id=1023,group_id=1023,default_permissions,allow_other 0 0
root@i777:/ #

ms.journie · Sep 25, 2015

cyril279 said:
harmonica.ss, are you still there? don't give up on me just yet.

I did finally get a chance to check the "mount" stats of my wife's i777, which also reports the user-storage partition as vfat. Her i777 has spent significant time on SHostock3, cm 10.1.3, & Omni 4.4; all without internal storage issues.

What kernel, and what firmware are you using? <-- this should have been my first question.

from my wife's i777:

Code:

/dev/block/vold/259:3 /mnt/media_rw/sdcard0 vfat rw,dirsync,nosuid,nodev,noexec,relatime,uid=1023,gid=1023,fmask=0007,dmask=0007,allow_utime=0020,codepage=cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro 0 0 /dev/block/vold/259:3 /mnt/secure/asec vfat rw,dirsync,nosuid,nodev,noexec,relatime,uid=1023,gid=1023,fmask=0007,dmask=0007,allow_utime=0020,codepage=cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro 0 0 /dev/fuse /storage/sdcard0 fuse rw,nosuid,nodev,relatime,user_id=1023,group_id=1023,default_permissions,allow_other 0 0 root@i777:/ #

How do I partition the sd card? I kind of got myself into a rut and then after the fact finding out that I needed to partition the sd card. Maybe you can help? I can send you a message of what I did. It's kind of a long message.

cyril279 · Sep 25, 2015

ms.journie said:
[ ... ] I can send you a message of what I did. It's kind of a long message.

So what happened?

ms.journie · Sep 25, 2015

cyril279 said:
So what happened?

Sorry had left. I'll try to send you the message either tonight or tomorrow.

ms.journie · Sep 26, 2015

cyril279 said:
So what happened?

This is the forum that I had followed. http://xdaforums.com/galaxy-s2-att/...ta-storage-t2839161/post54633983#post54633983

1. Went into download mode using usb jig
2. Odin on PC. I777UCMD8_I777ATTMD8_I777UCMD8_HOME.tar.md5 in "PDA SLOT" flashed
3. Phone boots up went through all set up.
4. Enabled USB debugging, checked allow install on unknown resources.
5. Installed "framaroot v.1.4.1 Root - Installed Odin Mobile – Reboot - flashed (zImage) jeboo_kernel_i777_v2-3a through Mobile Odin.
6. Boot into download mode.
8. Odin on PC - i777_4GB data - 45mb preload - 1GB system_pit in "PIT SLOT". I did not uncheck the reboot. Phone rebooted.
9. When it powered on, I would see the AT&T and then it would blink in and out and then it looked like it was shut off but it wasn’t.
I am able to go into download and recovery mode.
When I go into the recovery mode this is what it says. I have attached the picture.

In that forum step 10 says if internal cannot format then ......... Well I'm unable to mount storage or I just don't know how to.

Well after all of that the other day I thought I well maybe I can just flash back to stock tried that didn't work.
After 12 hours of trying to research I finally gave in to ask.

Are you able to help?

ms.journie · Sep 27, 2015

OMG!! The excitement is for real! I flashed back to SGH-I777_UCLE5 and now the phone actually boots up!! Thank you for your help!

ms.journie · Sep 27, 2015

@cyril279

So I'm trying to partition my I777 for more storage. I've been trying to follow this post - http://xdaforums.com/galaxy-s2-att/...ta-storage-t2839161/post54633983#post54633983 .

I'm having a bit of issues with Post #10. 10. If internal cannot format or gives error, connect phone to pc and mount storage, you can then format as fat32 from windows or whatever operating system you are using (recommended system). When done, unmount and try step above again just to be certain.

I connect my phone to PC and I'm unsure how to mount the storage and format to fat32. I click onto the Samsung phone, then it shows the external sd card and the phone. I have right clicked on the phone and scrolled to format but it doesn't specifically state it formats to fat 32.

Can you try to help me again?

cyril279 · Sep 27, 2015

ms.journie said:
@cyril279

So I'm trying to partition my I777 for more storage. I've been trying to follow this post - http://xdaforums.com/galaxy-s2-att/...ta-storage-t2839161/post54633983#post54633983 .

I'm having a bit of issues with Post #10. 10. If internal cannot format or gives error, connect phone to pc and mount storage, you can then format as fat32 from windows or whatever operating system you are using (recommended system). When done, unmount and try step above again just to be certain.

I connect my phone to PC and I'm unsure how to mount the storage and format to fat32. I click onto the Samsung phone, then it shows the external sd card and the phone. I have right clicked on the phone and scrolled to format but it doesn't specifically state it formats to fat 32.

Can you try to help me again?

Oh my, what a journey you've had in the last few days, I'm glad to hear that you got the initial problem sorted.

It has been some time since I messed with formatting the internal storage partition, so I would have to re-familiarize myself with the process before issuing further advice, and I don't have as much time as I once did (I have two young children now) but I will look into it. My responses will not likely be swift.

Have you read over the partition/formatting guide?

-Cyril

factoreal · Oct 9, 2015

Any Success in Internal SD Partition?

ms.journie said:
OMG!! The excitement is for real! I flashed back to SGH-I777_UCLE5 and now the phone actually boots up!! Thank you for your help!

Does the phone internal storage partition remain the same or has been successfully partitioned as per the guide?

sdcard can't mount

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