Database Info

[Q] Emmc Boot Recovery Misc Partition JY-G2 MTK6577

I got a cheap chinese phone Jiayu G2+ (MTK6577) model and I'm trying to learn the partitions of this device. I guess it doesn't help that I'm just starting to learn the inner workings of android in general. Trying to port CWM / TWRP to this phone. I've managed to done some of this work with the help of the BGCNGM's unpacker scripts, unfortunately, CWM isn't reading some partitions correctly so it's unable to perform nandroid backup and gets stuck at "backing up boot image".
It doesn't look like the device uses MTD, get empty when I go cat /proc/mtd
so when I executed cat /proc/partitions, this is what i get
Code:
major minor #blocks name
179 0 3792000 mmcblk0
179 1 1 mmcblk0p1
179 2 5120 mmcblk0p2
179 3 524288 mmcblk0p3
179 4 524288 mmcblk0p4
179 5 2661376 mmcblk0p5
179 6 45280 mmcblk0p6
179 64 1024 mmcblk0boot1
179 32 1024 mmcblk0boot0
179 96 15637504 mmcblk1
179 97 15636480 mmcblk1p1
It looks like mmcblk1 is my 16GB microsd card.
Doing a ls -la in my root directory, I can find the mapps of mmcblk0
Code:
[email protected] -> /dev/block/mmcblk0p1
[email protected]_ro -> /dev/block/mmcblk0p2
[email protected] -> /dev/block/mmcblk0p3
[email protected] -> /dev/block/mmcblk0p4
[email protected] -> /dev/block/mmcblk0p5
[email protected] -> /dev/block/mmcblk0p6
So what's left is mmcblk0boot1 and mmcblk0boot2, logical guess is that these are boot related partitions. But not exactly sure how to read these though.
Here's a copy of the recovery.fstab from the original rom's recovery.img
Code:
# mount point fstype device [device2]
/boot emmc boot
/cache ext4 /dev/block/mmcblk0p4
/data ext4 /dev/block/mmcblk0p5
/misc emmc misc
/recovery emmc recovery
/sdcard vfat /dev/block/mmcblk0p6
/sdcard2 vfat /dev/block/mmcblk1p1
/system ext4 /dev/block/mmcblk0p3
As I mentioned earlier, I'm unable to perform CWM backup most likely because CWM can't find the boot, misc, and recovery.
1. Does anyone have any idea how I can find these partitions?
2. So it looks like my /system partition (lives under 512mb partition /dev/block/mmcblk0p3) whenever I do a dd export of system.img, the file IS 512mb. But when I flash the rom using SP Flash Tool, the original firmware image for system.img is around 200 megs. So I'm assuming this is a full partition copy? Is there anyway I can export this without the dead space? Looking into ROM development.
Thanks for any tips and guides.

Hi
I have acer liquid gallant duo with mt6575 and this is my layout partion
[email protected]:/ # cat proc/partitions
major minor #blocks name
179 0 3807232 mmcblk0
179 1 1 mmcblk0p1
179 2 524288 mmcblk0p2
179 3 1048576 mmcblk0p3
179 4 1676400 mmcblk0p4
179 5 5120 mmcblk0p5
179 6 524288 mmcblk0p6
179 16 1024 mmcblk0boot1
179 8 1024 mmcblk0boot0
179 24 15339520 mmcblk1
179 25 15335424 mmcblk1p1
Click to expand...
Click to collapse
This is my configuration for mod recovery
# mount point fstype device [device2]
/boot emmc /boot
/cache ext4 /dev/block/mmcblk0p2
/data ext4 /dev/block/mmcblk0p3
/misc emmc /dev/misc ---> i have add /dev/
/recovery emmc /recovery
/emmc ext4 /dev/block/mmcblk0p4
/system ext4 /dev/block/mmcblk0p6
/sdcard vfat /dev/block/mmcblk1p1 /dev/block/mmcblk1
/sd-ext auto /dev/block/mmcblk1p2
Click to expand...
Click to collapse
Misc is ok now....
Same problem of you i not can backup boot and recovery.

Kaiyoti said:
As I mentioned earlier, I'm unable to perform CWM backup most likely because CWM can't find the boot, misc, and recovery.
1. Does anyone have any idea how I can find these partitions?
2. So it looks like my /system partition (lives under 512mb partition /dev/block/mmcblk0p3) whenever I do a dd export of system.img, the file IS 512mb. But when I flash the rom using SP Flash Tool, the original firmware image for system.img is around 200 megs. So I'm assuming this is a full partition copy? Is there anyway I can export this without the dead space? Looking into ROM development.
Thanks for any tips and guides.
Click to expand...
Click to collapse
Hey, did you get anywhere with this? I've just picked up a Jiayu G2+ and after looking around at the dearth of development around it, I thought about having a go at porting CM to this, and see about getting the battery life improved. But with no CWM to backup, install and recover, makes this a bit risky.
If not, although this would be my first handset hacking from scratch, perhaps we can figure this out.

Start with output of below in Terminal Emulator.
Code:
cat /proc/dumchar_info

From my G3, maybe is the same...
Or use Ameer's Online Nandroid Backup with the JIAYU G3 patch.... test if is working for you.
Code:
Part_Name Size StartAddr Type MapTo
preloader 0x0000000000040000 0x0000000000000000 2 /dev/misc-sd
dsp_bl 0x00000000005c0000 0x0000000000040000 2 /dev/misc-sd
mbr 0x0000000000004000 0x0000000000000000 2 /dev/block/mmcblk0
ebr1 0x0000000000004000 0x0000000000004000 2 /dev/block/mmcblk0p1
pmt 0x0000000000400000 0x0000000000008000 2 /dev/block/mmcblk0
nvram 0x0000000000500000 0x0000000000408000 2 /dev/block/mmcblk0
seccfg 0x0000000000020000 0x0000000000908000 2 /dev/block/mmcblk0
uboot 0x0000000000060000 0x0000000000928000 2 /dev/block/mmcblk0
bootimg 0x0000000000600000 0x0000000000988000 2 /dev/block/mmcblk0
recovery 0x0000000000600000 0x0000000000f88000 2 /dev/block/mmcblk0
sec_ro 0x0000000000600000 0x0000000001588000 2 /dev/block/mmcblk0p2
misc 0x0000000000060000 0x0000000001b88000 2 /dev/block/mmcblk0
logo 0x0000000000300000 0x0000000001be8000 2 /dev/block/mmcblk0
expdb 0x0000000000200000 0x0000000001ee8000 2 /dev/block/mmcblk0
android 0x0000000020100000 0x00000000020e8000 2 /dev/block/mmcblk0p3
cache 0x0000000020100000 0x00000000221e8000 2 /dev/block/mmcblk0p4
usrdata 0x00000000a2800000 0x00000000422e8000 2 /dev/block/mmcblk0p5
fat 0x0000000001018000 0x00000000e4ae8000 2 /dev/block/mmcblk0p6
bmtpool 0x0000000001500000 0x00000000ff9f00a8 2 /dev/block/mmcblk0
Salu2

Internal memory screwed up

Hallo guys,
got a little problem with my phone
it crashed while restoring an backup, now internal memory seems to be messed up.
1. Download Mode is working (flashed StockRom and Broodrom rc5)
2. I can reboot to recovery (I can flash other recovery, from internal sdcard, mounting USB works)
3. Mounting /system /data -> Recovery crashes
4. Factroy Reset does not work
3. When i try to flash a rom.zip it seems that only kernel is changed.
4. Factory Reset is not working
5. I can connect with adb
Perhaps you can have a look on the following outputs
fdisk -l
Code:
~ # ←[6nfdisk -l /dev/block/mmcblk0
fdisk -l /dev/block/mmcblk0
~ # ←[6nfdisk -l /dev/block/mmcblk0p1
fdisk -l /dev/block/mmcblk0p1
fdisk: can't open '/dev/block/mmcblk0p1': I/O error
~ # ←[6nfdisk -l /dev/block/mmcblk0p2
fdisk -l /dev/block/mmcblk0p2
fdisk: can't open '/dev/block/mmcblk0p2': I/O error
~ # ←[6nfdisk -l /dev/block/mmcblk0p3
fdisk -l /dev/block/mmcblk0p3
fdisk: can't open '/dev/block/mmcblk0p3': I/O error
~ # ←[6nfdisk -l /dev/block/mmcblk0p4
fdisk -l /dev/block/mmcblk0p4
fdisk: can't open '/dev/block/mmcblk0p4': I/O error
~ # ←[6nfdisk -l /dev/block/mmcblk0p5
fdisk -l /dev/block/mmcblk0p5
fdisk: can't open '/dev/block/mmcblk0p5': I/O error
~ # ←[6nfdisk -l /dev/block/mmcblk0p6
fdisk -l /dev/block/mmcblk0p6
fdisk: can't open '/dev/block/mmcblk0p6': I/O error
~ # ←[6nfdisk -l /dev/block/mmcblk0p7
fdisk -l /dev/block/mmcblk0p7
fdisk: can't open '/dev/block/mmcblk0p7': I/O error
~ # ←[6nfdisk -l /dev/block/mmcblk0p8
fdisk -l /dev/block/mmcblk0p8
fdisk: can't open '/dev/block/mmcblk0p8': I/O error
~ # ←[6nfdisk -l /dev/block/mmcblk0p9
fdisk -l /dev/block/mmcblk0p9
fdisk: can't open '/dev/block/mmcblk0p9': I/O error
~ # ←[6nfdisk -l /dev/block/mmcblk0p10
fdisk -l /dev/block/mmcblk0p10
fdisk: can't open '/dev/block/mmcblk0p10': I/O error
~ # ←[6nfdisk -l /dev/block/mmcblk0p11
fdisk -l /dev/block/mmcblk0p11
fdisk: can't open '/dev/block/mmcblk0p11': I/O error
~ # ←[6nfdisk -l /dev/block/mmcblk0p12
fdisk -l /dev/block/mmcblk0p12
fdisk: can't open '/dev/block/mmcblk0p12': I/O error
~ # ←[6nfdisk -l /dev/block/mmcblk0p13
fdisk -l /dev/block/mmcblk0p13
fdisk: can't open '/dev/block/mmcblk0p13': I/O error
~ # ←[6nfdisk -l /dev/block/mmcblk0p14
fdisk -l /dev/block/mmcblk0p14
fdisk: can't open '/dev/block/mmcblk0p14': I/O error
~ # ←[6nfdisk -l /dev/block/mmcblk0p15
fdisk -l /dev/block/mmcblk0p15
fdisk: can't open '/dev/block/mmcblk0p15': I/O error
~ # ←[6nfdisk -l /dev/block/mmcblk0p16
fdisk -l /dev/block/mmcblk0p16
Disk /dev/block/mmcblk0p16: 104 MB, 104857600 bytes
4 heads, 16 sectors/track, 3200 cylinders
Units = cylinders of 64 * 512 = 32768 bytes
Disk /dev/block/mmcblk0p16 doesn't contain a valid partition table
~ # ←[6nfdisk -l /dev/block/mmcblk0p17
fdisk -l /dev/block/mmcblk0p17
fdisk: can't open '/dev/block/mmcblk0p17': I/O error
~ # ←[6nfdisk -l /dev/block/mmcblk0p18
fdisk -l /dev/block/mmcblk0p18
fdisk: can't open '/dev/block/mmcblk0p18': I/O error
mounting /data in recovery:
Code:
I:Actual block device: '/dev/block/mmcblk0p17', current file system: 'ext4'
E:Unable to mount '/data'
Same error on all recoverys CWM / TWRP
Perhaps someone can give an advice

Try formatting system, data and cache then install broodROM RC5 again, it might work.
Did you use the correct recovery while changing roms? you need to use cwm 5.0.0.4 atleast

Flash recovery through ODIN...
Sent from my GT-I9001 using Tapatalk 2

broodplank1337 said:
Try formatting system, data and cache then install broodROM RC5 again, it might work.
Did you use the correct recovery while changing roms? you need to use cwm 5.0.0.4 atleast
Click to expand...
Click to collapse
How can i format data with adb?
I used CWM 6.0.2.7
recovery stucks always at formating data... until i kill by pressing power button
In recovery all functions where mounting /data is not needed are working.
Works
format system
format cache
wipe android secur
Fails
mount data
wipe dalvik
fix permissions

buffo1987 said:
Hallo guys,
got a little problem with my phone
it crashed while restoring an backup, now internal memory seems to be messed up.
1. Download Mode is working (flashed StockRom and Broodrom rc5)
2. I can reboot to recovery (I can flash other recovery, from internal sdcard, mounting USB works)
3. Mounting /system /data -> Recovery crashes
4. Factroy Reset does not work
3. When i try to flash a rom.zip it seems that only kernel is changed.
4. Factory Reset is not working
5. I can connect with adb
Perhaps you can have a look on the following outputs
fdisk -l
Code:
~ # ←[6nfdisk -l /dev/block/mmcblk0
fdisk -l /dev/block/mmcblk0
~ # ←[6nfdisk -l /dev/block/mmcblk0p1
fdisk -l /dev/block/mmcblk0p1
fdisk: can't open '/dev/block/mmcblk0p1': I/O error
~ # ←[6nfdisk -l /dev/block/mmcblk0p2
fdisk -l /dev/block/mmcblk0p2
fdisk: can't open '/dev/block/mmcblk0p2': I/O error
~ # ←[6nfdisk -l /dev/block/mmcblk0p3
fdisk -l /dev/block/mmcblk0p3
fdisk: can't open '/dev/block/mmcblk0p3': I/O error
~ # ←[6nfdisk -l /dev/block/mmcblk0p4
fdisk -l /dev/block/mmcblk0p4
fdisk: can't open '/dev/block/mmcblk0p4': I/O error
~ # ←[6nfdisk -l /dev/block/mmcblk0p5
fdisk -l /dev/block/mmcblk0p5
fdisk: can't open '/dev/block/mmcblk0p5': I/O error
~ # ←[6nfdisk -l /dev/block/mmcblk0p6
fdisk -l /dev/block/mmcblk0p6
fdisk: can't open '/dev/block/mmcblk0p6': I/O error
~ # ←[6nfdisk -l /dev/block/mmcblk0p7
fdisk -l /dev/block/mmcblk0p7
fdisk: can't open '/dev/block/mmcblk0p7': I/O error
~ # ←[6nfdisk -l /dev/block/mmcblk0p8
fdisk -l /dev/block/mmcblk0p8
fdisk: can't open '/dev/block/mmcblk0p8': I/O error
~ # ←[6nfdisk -l /dev/block/mmcblk0p9
fdisk -l /dev/block/mmcblk0p9
fdisk: can't open '/dev/block/mmcblk0p9': I/O error
~ # ←[6nfdisk -l /dev/block/mmcblk0p10
fdisk -l /dev/block/mmcblk0p10
fdisk: can't open '/dev/block/mmcblk0p10': I/O error
~ # ←[6nfdisk -l /dev/block/mmcblk0p11
fdisk -l /dev/block/mmcblk0p11
fdisk: can't open '/dev/block/mmcblk0p11': I/O error
~ # ←[6nfdisk -l /dev/block/mmcblk0p12
fdisk -l /dev/block/mmcblk0p12
fdisk: can't open '/dev/block/mmcblk0p12': I/O error
~ # ←[6nfdisk -l /dev/block/mmcblk0p13
fdisk -l /dev/block/mmcblk0p13
fdisk: can't open '/dev/block/mmcblk0p13': I/O error
~ # ←[6nfdisk -l /dev/block/mmcblk0p14
fdisk -l /dev/block/mmcblk0p14
fdisk: can't open '/dev/block/mmcblk0p14': I/O error
~ # ←[6nfdisk -l /dev/block/mmcblk0p15
fdisk -l /dev/block/mmcblk0p15
fdisk: can't open '/dev/block/mmcblk0p15': I/O error
~ # ←[6nfdisk -l /dev/block/mmcblk0p16
fdisk -l /dev/block/mmcblk0p16
Disk /dev/block/mmcblk0p16: 104 MB, 104857600 bytes
4 heads, 16 sectors/track, 3200 cylinders
Units = cylinders of 64 * 512 = 32768 bytes
Disk /dev/block/mmcblk0p16 doesn't contain a valid partition table
~ # ←[6nfdisk -l /dev/block/mmcblk0p17
fdisk -l /dev/block/mmcblk0p17
fdisk: can't open '/dev/block/mmcblk0p17': I/O error
~ # ←[6nfdisk -l /dev/block/mmcblk0p18
fdisk -l /dev/block/mmcblk0p18
fdisk: can't open '/dev/block/mmcblk0p18': I/O error
Perhaps someone can give an advice
Click to expand...
Click to collapse
did you use TWRP recovery ??

zikozoko said:
did you use TWRP recovery ??
Click to expand...
Click to collapse
cwm 6.0.2.7
Now i tried several recoverys TWRP and CWM but they are all working same without /data
flased broodrom rc5 again, stuck on boot. Can not factory reset, /data still not mountabel

I think your solution must be this:
You need to flash an empty data.img.ext4 to your phone using odin, I did it once, and it succeeded! But you first need to make it:
busybox dd if=/dev/zero of=/sdcard/data.img.ext4 bs=1M count=1024
1gb empty data.img.ext4 file, which can be flashed to restore the paritition
pack the file for odin:
tar -c data.img.ext4 > fix.tar
md5sum -t fix.tar >> fix.tar
mv fix.tar fix.tar.md5
So you either need cygwin or a native linux shell.

Or u can flash a stock rom via Odin and after booting install another recovery (ex 5.5.0.4 the most stable for me) and another costum rom.
VEREY IMPORTANT make sure u have the right AriesVE.ops. Try to download from SamMobile.

broodplank1337 said:
I think your solution must be this:
You need to flash an empty data.img.ext4 to your phone using odin, I did it once, and it succeeded! But you first need to make it:
busybox dd if=/dev/zero of=/sdcard/data.img.ext4 bs=1M count=1024
1gb empty data.img.ext4 file, which can be flashed to restore the paritition
pack the file for odin:
tar -c data.img.ext4 > fix.tar
md5sum -t fix.tar >> fix.tar
mv fix.tar fix.tar.md5
So you either need cygwin or a native linux shell.
Click to expand...
Click to collapse
Looks quite interesting.
I#m not sure what i have to do:
connect phone to ubuntu vm
Terminal:
Code:
$ adb busybox dd if=/dev/zero of=/sdcard/data.img.ext4 bs=1M count=1024
$ cd /sdcard/
$ tar -c data.img.ext4 > fix.tar
$ md5sum -t fix.tar >> fix.tar
$ mv fix.tar fix.tar.md5
2. Flash fix.tar.md5 as one package with odin
right?

broodplank1337 said:
I think your solution must be this:
You need to flash an empty data.img.ext4 to your phone using odin, I did it once, and it succeeded! But you first need to make it:
busybox dd if=/dev/zero of=/sdcard/data.img.ext4 bs=1M count=1024
1gb empty data.img.ext4 file, which can be flashed to restore the paritition
pack the file for odin:
tar -c data.img.ext4 > fix.tar
md5sum -t fix.tar >> fix.tar
mv fix.tar fix.tar.md5
So you either need cygwin or a native linux shell.
Click to expand...
Click to collapse
Hi , TNX
What about this script should run on recovery :
Code:
cat /dev/zero > /dev/block/mmcblk0pX

Code:
[email protected]:~$ adb shell
~ # busybox dd if=/dev/zero of=/sdcard/data.img.ext4 bs=1M count=1024
phone crashes -> data.img.ext4 is only 661 MB
will retry...
I think you did not meant me to do this on the phone.
Code:
[email protected]:~$ cd resc/
[email protected]:~/resc$ busybox dd if=/dev/zero of=^Cata.img.ext4 bs=1M count=1024
[email protected]:~/resc$ busybox dd if=/dev/zero of=data.img.ext4 bs=1M count=1024
1024+0 records in
1024+0 records out
[email protected]:~/resc$ tar -c data.img.ext4 > fix.tar
[email protected]:~/resc$ md5sum -t fix.tar >> fix.tar
[email protected]:~/resc$ mv fix.tar fix.tar.md5
I got the file now
Odin
Code:
Check MD5 FileName...
MD5 File Name : fix.tar
Open File Name : fix.tar
Check MD5 ...
Tail MD5 : 5654164EA05D41668D50F97731E2EB5A
Image MD5 : 5654164EA05D41668D50F97731E2EB5A
Check MD5 ... ok
<1> Added!!!
<1> Detected!!!
Download Start...
<0> Create File...
<1> StartThread Detected : 1
<2> StartThread Detected : 0
<3> StartThread Detected : 0
<4> StartThread Detected : 0
<5> StartThread Detected : 0
<6> StartThread Detected : 0
<7> StartThread Detected : 0
<8> StartThread Detected : 0
<1> setup connection...
<1> odin mode.. check plcatform verification.
<1> VerifyPlatform:V0, P0,R0
<1> START!!!
<1> e - unknown file - "data.img.ext4"
<1> set download environment.
<1> reset pda..
<0> Started Timer
<1> Close serial port and wait until rebooting.
Problem still exits

buffo1987 said:
Hallo guys,
got a little problem with my phone
it crashed while restoring an backup, now internal memory seems to be messed up.
1. Download Mode is working (flashed StockRom and Broodrom rc5)
2. I can reboot to recovery (I can flash other recovery, from internal sdcard, mounting USB works)
3. Mounting /system /data -> Recovery crashes
4. Factroy Reset does not work
3. When i try to flash a rom.zip it seems that only kernel is changed.
4. Factory Reset is not working
5. I can connect with adb
Perhaps you can have a look on the following outputs
fdisk -l
mounting /data in recovery:
Code:
I:Actual block device: '/dev/block/mmcblk0p17', current file system: 'ext4'
E:Unable to mount '/data'
Same error on all recoverys CWM / TWRP
Perhaps someone can give an advice
Click to expand...
Click to collapse
Hey Buffo,
I have the same problem after trying your test-versions. I could "revive" all partitions but data by downgrading recovery to 5.5.04 and formating system and cache then. But also data could not be formatted via 5.5.04 so I also will try broods proposal...
btw. this does not work to solve it.
Code:
cat /dev/zero > /dev/block/mmcblk0pX

magicw said:
Hey Buffo,
I have the same problem after trying your test-versions. I could "revive" all partitions but data by downgrading recovery to 5.5.04 and formating system and cache then. But also data could not be formatted via 5.5.04 so I also will try broods proposal...
btw. this does not work to solve it.
Code:
cat /dev/zero > /dev/block/mmcblk0pX
Click to expand...
Click to collapse
Sad to here that,
removed all cwm 6.0.2.7 downloads from my post.
At least flashing a stock rom makes the phone look untouched, so i will send it for repair...
I already tried to format data with adb: mke2fs -L data -b 4096 -m 0 -F /dev/block/mmcblk0p17, but also just works with /system + /cache
When exactly did it happen for you?

hey here i found something
i do not know if it helps but read it and decide it looks like your problem in a way
for another device but maybe helpful
http://forum.cyanogenmod.org/topic/6433-solved-messed-up-partitions-on-internal-storage/

krislibaeer said:
hey here i found something
i do not know if it helps but read it and decide it looks like your problem in a way
for another device but maybe helpful
http://forum.cyanogenmod.org/topic/6433-solved-messed-up-partitions-on-internal-storage/
Click to expand...
Click to collapse
interesting. I've run parted via adb and mmcblk0p17 shows 1447 MB - shouldn't this be 1024 MB only?

magicw said:
interesting. I've run parted via adb and mmcblk0p17 shows 1447 MB - shouldn't this be 1024 MB only?
Click to expand...
Click to collapse
Code:
179 0 7755776 mmcblk0
179 1 106495 mmcblk0p1 //secboot2 partition map
179 2 500 mmcblk0p2 //dbl (boot loader)
179 3 3596 mmcblk0p3 //osbl (boot loader)
179 4 1 mmcblk0p4 //mbr extended partition table
179 5 5120 mmcblk0p5 //emmcboot (boot loader, download mode)
179 6 20000 mmcblk0p6 //amss
179 7 3072 mmcblk0p7 //emmcparam
179 8 5120 mmcblk0p8 //boot
179 9 7000 mmcblk0p9 //adsp
179 10 3072 mmcblk0p10 //rmt
179 11 3072 mmcblk0p11 //rmt
179 12 8192 mmcblk0p12 //persist
179 13 7680 mmcblk0p13 //recovery
179 14 5120 mmcblk0p14 //param
179 15 532480 mmcblk0p15 //system
179 16 102400 mmcblk0p16 //cache
179 17 1413120 mmcblk0p17 //data
179 18 204800 mmcblk0p18 //preload
179 19 500 mmcblk0p19 // These
179 20 3596 mmcblk0p20 // partitions
179 21 5120 mmcblk0p21 // are
179 22 20000 mmcblk0p22 // either
179 23 5120 mmcblk0p23 // empty
179 24 7000 mmcblk0p24 // or
179 25 5120 mmcblk0p25 // backup
179 26 5120 mmcblk0p26 // partitions
179 27 5120 mmcblk0p27 //efs
179 28 5228544 mmcblk0p28 //internal sdcard

Xistance said:
Code:
# cat /proc/partitions
major minor #blocks name
179 0 3864576 mmcblk0
179 1 106495 mmcblk0p1 //secboot2 partition map
179 2 500 mmcblk0p2 //dbl (boot loader)
179 3 3596 mmcblk0p3 //osbl (boot loader)
179 4 1 mmcblk0p4 //mbr extended partition table
179 5 5120 mmcblk0p5 //emmcboot (boot loader, download mode)
179 6 20000 mmcblk0p6 //amss
179 7 3072 mmcblk0p7 //emmcparam
179 8 5632 mmcblk0p8 //boot
179 9 6488 mmcblk0p9 //adsp
179 10 3072 mmcblk0p10 //rmt
179 11 3072 mmcblk0p11 //rmt
179 12 8192 mmcblk0p12 //persist
179 13 7680 mmcblk0p13 //recovery
179 14 5120 mmcblk0p14 //param
179 15 547840 mmcblk0p15 //system
179 16 61440 mmcblk0p16 //cache
179 17 1136640 mmcblk0p17 //data
179 18 51200 mmcblk0p18 //preload
179 19 500 mmcblk0p19
179 20 3596 mmcblk0p20
179 21 5120 mmcblk0p21
179 22 20000 mmcblk0p22
179 23 5120 mmcblk0p23
179 24 7000 mmcblk0p24
179 25 5120 mmcblk0p25
179 26 5120 mmcblk0p26
179 27 5120 mmcblk0p27 //efs
179 28 1787904 mmcblk0p28 //internal sdcard
Click to expand...
Click to collapse
wtf your internal sdcard is 4gb? (if you look at the total blocks)
check my output with 8gb internal
Code:
cat proc/partitions
major minor #blocks name
179 0 7755776 mmcblk0
179 1 106495 mmcblk0p1
179 2 500 mmcblk0p2
179 3 3596 mmcblk0p3
179 4 1 mmcblk0p4
179 5 5120 mmcblk0p5
179 6 20000 mmcblk0p6
179 7 3072 mmcblk0p7
179 8 5120 mmcblk0p8
179 9 7000 mmcblk0p9
179 10 3072 mmcblk0p10
179 11 3072 mmcblk0p11
179 12 8192 mmcblk0p12
179 13 7680 mmcblk0p13
179 14 5120 mmcblk0p14
179 15 532480 mmcblk0p15
179 16 102400 mmcblk0p16
179 17 1413120 mmcblk0p17
179 18 204800 mmcblk0p18
179 19 500 mmcblk0p19
179 20 3596 mmcblk0p20
179 21 5120 mmcblk0p21
179 22 20000 mmcblk0p22
179 23 5120 mmcblk0p23
179 24 7000 mmcblk0p24
179 25 5120 mmcblk0p25
179 26 5120 mmcblk0p26
179 27 5120 mmcblk0p27
179 28 5228544 mmcblk0p28

broodplank1337 said:
wtf your internal sdcard is 4gb? (if you look at the total blocks)
check my output with 8gb internal
Code:
cat proc/partitions
major minor #blocks name
179 0 7755776 mmcblk0
179 1 106495 mmcblk0p1
179 2 500 mmcblk0p2
179 3 3596 mmcblk0p3
179 4 1 mmcblk0p4
179 5 5120 mmcblk0p5
179 6 20000 mmcblk0p6
179 7 3072 mmcblk0p7
179 8 5120 mmcblk0p8
179 9 7000 mmcblk0p9
179 10 3072 mmcblk0p10
179 11 3072 mmcblk0p11
179 12 8192 mmcblk0p12
179 13 7680 mmcblk0p13
179 14 5120 mmcblk0p14
179 15 532480 mmcblk0p15
179 16 102400 mmcblk0p16
179 17 1413120 mmcblk0p17
179 18 204800 mmcblk0p18
179 19 500 mmcblk0p19
179 20 3596 mmcblk0p20
179 21 5120 mmcblk0p21
179 22 20000 mmcblk0p22
179 23 5120 mmcblk0p23
179 24 7000 mmcblk0p24
179 25 5120 mmcblk0p25
179 26 5120 mmcblk0p26
179 27 5120 mmcblk0p27
179 28 5228544 mmcblk0p28
Click to expand...
Click to collapse
Oh yeah sorry. I took it from arco on his Galaxy W and forgot they had different sizes =.=.
Edit : Fixed ^^

Code:
(parted) check
check
check
Error: Can't have a partition outside the disk!
Code:
major minor #blocks name
179 0 [COLOR="Red"]7552000 [/COLOR]mmcblk0
179 1 106495 mmcblk0p1
179 2 500 mmcblk0p2
179 3 3596 mmcblk0p3
179 4 1 mmcblk0p4
179 5 5120 mmcblk0p5
179 6 20000 mmcblk0p6
179 7 3072 mmcblk0p7
179 8 5120 mmcblk0p8
179 9 7000 mmcblk0p9
179 10 3072 mmcblk0p10
179 11 3072 mmcblk0p11
179 12 8192 mmcblk0p12
179 13 7680 mmcblk0p13
179 14 5120 mmcblk0p14
179 15 532480 mmcblk0p15
179 16 102400 mmcblk0p16
179 17 1413120 mmcblk0p17
179 18 204800 mmcblk0p18
179 19 500 mmcblk0p19
179 20 3596 mmcblk0p20
179 21 5120 mmcblk0p21
179 22 20000 mmcblk0p22
179 23 5120 mmcblk0p23
179 24 7000 mmcblk0p24
179 25 5120 mmcblk0p25
179 26 5120 mmcblk0p26
179 27 5120 mmcblk0p27
179 28 [COLOR="Red"]5024768 [/COLOR]mmcblk0p28

buffo1987 said:
Code:
(parted) check
check
check
Error: Can't have a partition outside the disk!
Code:
major minor #blocks name
179 0 [COLOR="Red"]7552000 [/COLOR]mmcblk0
179 1 106495 mmcblk0p1
179 2 500 mmcblk0p2
179 3 3596 mmcblk0p3
179 4 1 mmcblk0p4
179 5 5120 mmcblk0p5
179 6 20000 mmcblk0p6
179 7 3072 mmcblk0p7
179 8 5120 mmcblk0p8
179 9 7000 mmcblk0p9
179 10 3072 mmcblk0p10
179 11 3072 mmcblk0p11
179 12 8192 mmcblk0p12
179 13 7680 mmcblk0p13
179 14 5120 mmcblk0p14
179 15 532480 mmcblk0p15
179 16 102400 mmcblk0p16
179 17 1413120 mmcblk0p17
179 18 204800 mmcblk0p18
179 19 500 mmcblk0p19
179 20 3596 mmcblk0p20
179 21 5120 mmcblk0p21
179 22 20000 mmcblk0p22
179 23 5120 mmcblk0p23
179 24 7000 mmcblk0p24
179 25 5120 mmcblk0p25
179 26 5120 mmcblk0p26
179 27 5120 mmcblk0p27
179 28 [COLOR="Red"]5024768 [/COLOR]mmcblk0p28
Click to expand...
Click to collapse
the partition has a shift of 203776 (both have same size )
that is weird

[Q] How to restore damaged Internal SD card partition layout? Tried everything.

I have Samsung S 3 mini.
I did something really bad to my INTERNAL SD CARD partition layout, so now I have
Code:
~ # cat /proc/partitions
major minor #blocks name
179 0 7634944 mmcblk0
179 64 2048 mmcblk0boot1
179 32 2048 mmcblk0boot0
179 96 3866624 mmcblk1
179 97 3862528 mmcblk1p1
Code:
~ # ls -la /dev/block/mmcblk*
brw------- 1 root root 179, 0 Jan 1 10:30 /dev/block/mmcblk0
brw------- 1 root root 179, 32 Jan 1 09:28 /dev/block/mmcblk0boot0
brw------- 1 root root 179, 64 Jan 1 09:28 /dev/block/mmcblk0boot1
-rw-rw-rw- 1 root root 16777216 Jan 1 10:07 /dev/block/mmcblk0p20
-rw-r--r-- 1 root root 0 Jan 1 10:07 /dev/block/mmcblk0p22
brw------- 1 root root 179, 96 Jan 1 09:28 /dev/block/mmcblk1
brw------- 1 root root 179, 97 Jan 1 09:28 /dev/block/mmcblk1p1
Code:
~ # df
Filesystem 1K-blocks Used Available Use% Mounted on
tmpfs 411756 16452 395304 4% /dev
/dev/block/mmcblk1p1 3858432 1473472 2384960 38% /external_sd
Code:
~ # mount
rootfs on / type rootfs (rw)
tmpfs on /dev type tmpfs (rw,nosuid,relatime,mode=755)
devpts on /dev/pts type devpts (rw,relatime,mode=600)
proc on /proc type proc (rw,relatime)
sysfs on /sys type sysfs (rw,relatime)
/dev/block/mmcblk1p1 on /external_sd type vfat (rw,nodev,noatime,nodiratime,fmask=0000,dmask=0000,allow_utime=0022,codepage=cp437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro)
Code:
~ # tail ./etc/recovery.fstab
/system ext4 /dev/block/mmcblk0p22
/cache ext4 /dev/block/mmcblk0p23
/data ext4 /dev/block/mmcblk0p25 length=-16384
/efs ext4 /dev/block/mmcblk0p11
/boot emmc /dev/block/mmcblk0p20
/recovery emmc /dev/block/mmcblk0p21
/preload ext4 /dev/block/mmcblk0p24
/modem ext4 /dev/block/mmcblk0p12
/sdcard datamedia /dev/null
/external_sd vfat /dev/block/mmcblk1p1
Code:
~ # tail ./etc/fstab
/dev/block/mmcblk0p23 /cache ext4 rw
/dev/block/mmcblk0p25 /data ext4 rw
/dev/block/mmcblk0p22 /system ext4 rw
/dev/null /sdcard datamedia rw
Code:
~ # parted /dev/block/mmcblk0
GNU Parted 1.8.8.1.179-aef3
Using /dev/block/mmcblk0
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) print
print
Warning: /dev/block/mmcblk0 contains GPT signatures, indicating that it has a
GPT table. However, it does not have a valid fake msdos partition table, as it
should. Perhaps it was corrupted -- possibly by a program that doesn't
understand GPT partition tables. Or perhaps you deleted the GPT table, and are
now using an msdos partition table. Is this a GPT partition table?
Yes/No?
My ClockWorkMod recovery tool can't mount anything (/cache, /system, nothing). This is what kind of stuff I get in CWM:
Code:
-- Wiping cache...
Formatting /cache...
Need size of filesystem
E:format_volume: make_extf4fs failed on /dev/block/mmcblk0p23
Cache wipe complete.
W:failed to mount /dev/block/mmcblk0p23 (Block device required)
E:Can't mount /cache/recovery/log
E:Can't open /cache/recovery/log
W:failed to mount /dev/block/mmcblk0p23 (Block device required)
E:Can't mount /cache/recovery/last_log
E:Can't open /cache/recovery/last_log
W:failed to mount /dev/block/mmcblk0p23 (Block device required)
W:Can't unlink /cache/recovery/command
Formatting /data...
warning: get_file_size: Computed filesystem size less than 0
Need size of filesystem
E:format_volume: make_extf4fs failed on /dev/block/mmcblk0p25
Error formatting /data!
W:failed to mount /dev/block/mmcblk0p23 (Block device required)
E:Can't mount /cache/recovery/log
E:Can't open /cache/recovery/log
As you can see, there is no partitions for /system, /cache and other stuff, that should be there. (but /system, and /cache folders are present in dir listing)
I really did everything I could. I tried: restore from backup (I have one, made with recovery tool), install new ROM (With recovery tool), install stock firmware and stock kernel in ODIN mode. I even tried some PIT file: nothing did absolutely nothing to my status.
Frankly I miss some important part in understanding of filesystem, partitions, images, what is ROM, what is stock kernel, how does those 22, 23 25 partitions are created etc ...
What should I do? Please, help.

How did you mess it up
Sent from my Nexus 4 using xda app-developers app

mattoaida said:
How did you mess it up
Click to expand...
Click to collapse
As I remember correctly, I tried to repartition my External SD card with fdisk right on Android via 'adb shell'. And I delete existed (there was only one as I recall) partition on mmcblk0 (which is appeared to be not an External, but Internal =\
I tried to create fat and ext partitions on mmcblk0, but only now I thought, that I didn't format it .. and maybe ext should be made as ext3 or ext4. Don't know exactly how to do it.

Oh, looks like I have everything in console buffer (full history of distraction actions)
In the beginning I had this:
Code:
cat /proc/partitions
major minor #blocks name
7 0 2111 loop0
179 0 7634944 mmcblk0
179 1 128 mmcblk0p1
179 2 384 mmcblk0p2
179 3 1024 mmcblk0p3
179 4 1024 mmcblk0p4
179 5 512 mmcblk0p5
179 6 512 mmcblk0p6
179 7 512 mmcblk0p7
179 8 512 mmcblk0p8
179 9 1024 mmcblk0p9
179 10 1024 mmcblk0p10
179 11 16384 mmcblk0p11
179 12 16384 mmcblk0p12
179 13 16384 mmcblk0p13
179 14 51200 mmcblk0p14
179 15 64 mmcblk0p15
179 16 14336 mmcblk0p16
179 17 2048 mmcblk0p17
179 18 2048 mmcblk0p18
179 19 16384 mmcblk0p19
179 20 16384 mmcblk0p20
179 21 16384 mmcblk0p21
179 22 1228800 mmcblk0p22
179 23 860160 mmcblk0p23
179 24 327680 mmcblk0p24
179 25 4945920 mmcblk0p25
179 64 2048 mmcblk0boot1
179 32 2048 mmcblk0boot0
179 96 3872256 mmcblk1
179 97 3868160 mmcblk1p1
254 0 2110 dm-0
Code:
/ $ df
Filesystem Size Used Free Blksize
/dev 402.1M 84K 402M 4096
/mnt/asec 402.1M 0K 402.1M 4096
/mnt/obb 402.1M 0K 402.1M 4096
/dev/shm 402.1M 0K 402.1M 4096
/system 1.2G 414.5M 766.6M 4096
/modemfs 15.7M 4.3M 11.4M 4096
/cache 826.8M 84.8M 742M 4096
/efs 15.7M 4.5M 11.2M 4096
/preload 315M 64.2M 250.8M 4096
/data 4.6G 4G 699.2M 4096
/mnt/.lfs: Function not implemented
/storage/sdcard0 4.6G 4G 699.2M 4096
/mnt/asec/com.spruds.transport.pro.tallin-1 2M 888K 1.1M 4096
/storage/sdcard1 3.7G 905.7M 2.8G 32768
Even before everything went wrong I tried to use parted command and get an error
Code:
~ # parted /dev/block/mmcblk0
GNU Parted 1.8.8.1.179-aef3
Using /dev/block/mmcblk0
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) list
list
check NUMBER do a simple check on the file system
cp [FROM-DEVICE] FROM-NUMBER TO-NUMBER copy file system to another partition
.....
.....
copyright information of GNU Parted
(parted) print
print
Error: Unable to satisfy all constraints on the partition.
This is fdisk print before disaster
Code:
~ # fdisk /dev/block/mmcblk0
The number of cylinders for this disk is set to 954368.
There is nothing wrong with that, but this is larger than 1024,
and could in certain setups cause problems with:
1) software that runs at boot time (e.g., old versions of LILO)
2) booting and partitioning software from other OSs
(e.g., DOS FDISK, OS/2 FDISK)
Command (m for help): p
Disk /dev/block/mmcblk0: 7818 MB, 7818182656 bytes
1 heads, 16 sectors/track, 954368 cylinders
Units = cylinders of 16 * 512 = 8192 bytes
Device Boot Start End Blocks Id System
/dev/block/mmcblk0p1 1 954368 7634943+ ee EFI GPT
Partition 1 does not end on cylinder boundary
And then I deleted it
Code:
~ # fdisk /dev/block/mmcblk0
The number of cylinders for this disk is set to 954368.
There is nothing wrong with that, but this is larger than 1024,
and could in certain setups cause problems with:
1) software that runs at boot time (e.g., old versions of LILO)
2) booting and partitioning software from other OSs
(e.g., DOS FDISK, OS/2 FDISK)
Command (m for help): p
Disk /dev/block/mmcblk0: 7818 MB, 7818182656 bytes
1 heads, 16 sectors/track, 954368 cylinders
Units = cylinders of 16 * 512 = 8192 bytes
Device Boot Start End Blocks Id System
/dev/block/mmcblk0p1 1 954368 7634943+ ee EFI GPT
Partition 1 does not end on cylinder boundary
Command (m for help): d
Selected partition 1
Command (m for help): w
The partition table has been altered.
Calling ioctl() to re-read partition table
fdisk: WARNING: rereading partition table failed, kernel still uses old table: Device or resource busy

why there are so many partitions on my android device?

in fact i am confused about the partitions on my device, don't know what is the function of each partition,
which makes me puzzled is that these partitions don't have a meaningful name such in the linux system,
so is there any method to know the function of each partition? for example, which partition stands for boot, recovery, or system?
# fdisk /dev/block/mmcblk0
fdisk /dev/block/mmcblk0
The number of cylinders for this disk is set to 483328.
There is nothing wrong with that, but this is larger than 1024,
and could in certain setups cause problems with:
1) software that runs at boot time (e.g., old versions of LILO)
2) booting and partitioning software from other OSs
(e.g., DOS FDISK, OS/2 FDISK)
Command (m for help): p
p
Disk /dev/block/mmcblk0: 3959 MB, 3959422976 bytes
1 heads, 16 sectors/track, 483328 cylinders
Units = cylinders of 16 * 512 = 8192 bytes
Device Boot Start End Blocks Id System
/dev/block/mmcblk0p1 1 30721 245760 b Win95 FAT32
Partition 1 does not end on cylinder boundary
/dev/block/mmcblk0p2 * 30721 30783 500 4d Unknown
Partition 2 does not end on cylinder boundary
/dev/block/mmcblk0p3 30783 31158 3000 46 Unknown
Partition 3 does not end on cylinder boundary
/dev/block/mmcblk0p4 31158 483328 3617363+ 5 Extended
Partition 4 does not end on cylinder boundary
/dev/block/mmcblk0p5 32769 34304 12288 59 Unknown
/dev/block/mmcblk0p6 40961 57600 133120 4c Unknown
/dev/block/mmcblk0p7 65537 65599 500 5a Unknown
/dev/block/mmcblk0p8 73729 74112 3072 58 Unknown
/dev/block/mmcblk0p9 81921 82795 7000 50 Unknown
/dev/block/mmcblk0p10 90113 90496 3072 4a Unknown
/dev/block/mmcblk0p11 98305 98688 3072 4b Unknown
/dev/block/mmcblk0p12 106497 134656 225280 83 Linux
/dev/block/mmcblk0p13 139265 216064 614400 83 Linux
/dev/block/mmcblk0p14 221185 483328 2097152 69 Unknown

sensation XE make_extf4fs failed on /dev/block/mmc/...

Hi, I know that there are lots of topics like that but I didn't find any of those helpful.
I was just doing some basic changes to the settings of the phone, and then suddenly it rebooted to recovery mode, and it doesn't boot anymore.
I get this error when I want to format the data partition:
Code:
E:format_volume: make_extf4fs failed on /dev/block/mmc/blk0p23
E:format_volume: make_extf4fs failed on /dev/block/mmc/blk0p23
E:format_volume: make_extf4fs failed on /dev/block/mmc/blk0p24
E:format_volume: make_extf4fs failed on /dev/block/mmc/blk0p24
formating /sdcard/.android_secure...
Data wipe complete.
And I also get the same error when I want to format the system partition, except this time the blk0p22 block causes error.
The phone's s-off, with 4ext recovery touch, hboot 1.27.1111, and it was running viperS 5.3.0 when this happened.
what do I have to do?
thanks. :good:

Now I got to the /dev/block/mmc/ via the adb shell, the following files are in the directory:
Code:
ls
loop0 loop7 mmcblk0p14 mmcblk0p20 mmcblk0p27 mmcblk0p4 mmcblk1p
1
loop1 mmcblk0 mmcblk0p15 mmcblk0p21 mmcblk0p28 mmcblk0p5 platform
loop2 mmcblk0p1 mmcblk0p16 mmcblk0p22 mmcblk0p29 mmcblk0p6
loop3 mmcblk0p10 mmcblk0p17 mmcblk0p23 mmcblk0p3 mmcblk0p7
loop4 mmcblk0p11 mmcblk0p18 mmcblk0p24 mmcblk0p30 mmcblk0p8
loop5 mmcblk0p12 mmcblk0p19 mmcblk0p25 mmcblk0p31 mmcblk0p9
loop6 mmcblk0p13 mmcblk0p2 mmcblk0p26 mmcblk0p32 mmcblk1
As written in this link, I have put parted to the sbin directory, now when I try to format the directory I get this error:
Code:
~ # parted /dev/block/mmc/ mkfs ext4
parted /dev/block/mmc/ mkfs ext4
Error: Could not stat device /dev/block/mmc/ - No such file or directory.
Retry/Cancel?
what should I do now? am I doing the right thing?
thanks.

the system/data partitions are not even mounting:
Code:
mount -a
mount: mounting /dev/block/mmcblk0p23 on /data failed: Invalid argument
mount: mounting /dev/block/mmcblk0p22 on /system failed: Invalid argument
and when I try to mount the cache partition:
Code:
mount cache
mount: mounting /dev/block/mmcblk0p24 on /cache failed: Device or resource busy
Is there anyway that I can change the internal memory chip without changing the whole motherboard?
thanks.
edit:
I get this when I run the parted and then I send mkfs 1 ext3 or ext4:
Code:
(parted) mkfs 1 ext4
mkfs 1 ext4
mkfs 1 ext4
Error: /dev/block/mmcblk0: unrecognised disk label
(parted) mkfs 1 ext3
mkfs 1 ext3
mkfs 1 ext3
Error: /dev/block/mmcblk0: unrecognised disk label

any solution?