I am try extract system.IMG to system data but not working.
In phone or computer?
For Linux, I used this: https://forum.xda-developers.com/showthread.php?t=1588461
basically, download simg2img, run a terminal and
Code:
mkdir mounted
./simg2img SYSTEM.img sys.raw
sudo mount -t ext4 -o loop sys.raw mounted/
Edit: As you see, you can't extract system.img as is.
Related
I downloaded the latest US update from from Asus and wanted to mount the blob file in Ubuntu. But don't know how, everything I tried did not work.
sudo mount -t ext4 -o loop blob /temp
sudo mount -t ext3 -o loop blob /temp
Any help?
I would use -t auto instead of manually specifying a filesystem type.
Also, are you sure it's actually a filesystem image? It could very well be a normal compressed file, or their own special-ish format. You could try running file blob (assuming 'blob' is the file name) to see what it thinks it is.
I found the following, but instead of flashing the file, i would first like to extract the contents.
Code:
run “dd if=/data/local/blob of=/dev/block/mmcblk0p4″
then reboot the device, on reboot you should see a progress bar indicating the flashing of the “blob”
i guess i'll look at it with a hex editor. Maybe there will be a header that will tell the story of what it is.
Hi,
I am using make_ext4fs(from system/extra/ext4_utils) to make system.img on host machine and burn this image to pre-built eMMC partition.
The options I used for make_ext4fs is,
make_ext4fs -l 300M -a system system.img /system
I tried with -s option and it just could not be mounted. Anyhow, without -s it mounts ok, but the problem is the file permission gets all screwed up. Before the image was built, the original system folder had files with 777, but after image was built and mounted, all the files are 744. I doubt this has to do with -s option but I am no expert. Does anyone have similar experience like this or know how to fix this permission issue?
Thanks
Search before you post
See
http://forum.xda-developers.com/showthread.php?t=953461
Does anybody know how to generate those fs_config and file_context files for each sub-partition of super.img for the make_ext4fs binary to function properly? Thank you!
ElfTool
This tool will help you to pack and unpack boot image for sony mobile devices.
Usage :
For unpacking
Code:
elftool unpack -i input-path -o output-path
For packing
If you have header file containing address of kernel, ramdisk etc..
Code:
elftool pack -o output-path header=path/to/header kernel-path ramdisk-path,ramdisk ipl-path,ipl rpm-path,rpm [email protected]
Else
Code:
elftool pack -o output-path [email protected] [email protected],ramdisk [email protected],ipl [email protected],rpm [email protected]
The tool was created for injecting twrp recovery ramdisk to fxp cm10 boot images to prevent overwriting of cwm ramdisk over twrp ramdisk. I hope this tool will be useful for other developers also.
Here is how I used it for injecting twrp to fxp cm10 boot images.
During start of twrp run backup.sh. This will extract twrp ramdisk from the boot partition and store it in /cache/backup
Code:
mount /cache
cd /cache
mkdir backup
cd backup
dump_image /dev/block/mmcblk0p3 /cache/backup/oldboot.img
mkdir oldboot
elftool unpack -i /cache/backup/oldboot.img -o /cache/backup/oldboot
cd oldboot
mkdir uramdisk
cd uramdisk
gzip -dc ../ramdisk | cpio -i
mv sbin/ramdisk-recovery.cpio /cache/backup/ramdisk-recovery.cpio
cd /cache/backup
rm -irf oldboot
rm oldboot.img
When a new zip file is installed inject.sh is run. This will extract the newly installed boot image and inject the twrp ramdisk into it and then flash the newly created bootimage.
Code:
#!/sbin/sh
mount /cache
dump_image /dev/block/mmcblk0p3 /cache/newboot.img
mkdir /cache/newboot
elftool unpack -i /cache/newboot.img -o /cache/newboot
rm cache/newboot.img
cd /cache/newboot
mkdir uramdisk
cd uramdisk
gzip -dc ../ramdisk | cpio -i
rm ../ramdisk
if [ -e "/cache/backup/ramdisk-recovery.cpio" ];then
cp /cache/backup/ramdisk-recovery.cpio sbin/ramdisk-recovery.cpio
cd ..
mkbootfs uramdisk > ramdisk.cpio
cat ramdisk.cpio | gzip > ramdisk
rm -irf uramdisk
rm ramdisk.cpio
elftool pack -o /cache/injectboot.img [email protected] [email protected],ramdisk [email protected]
cd /cache
rm -irf newboot
if [ -e "/cache/injectboot.img" ];then
erase_image /dev/block/mmcblk0p3
flash_image /dev/block/mmcblk0p3 /cache/injectboot.img
rm /cache/injectboot.img
fi
fi
Both arm and x86_64 versions are available.
Thanks to sony for providing boot image format in packelf.py
Source code can be found here
yeah
thanks bro
srl3gx said:
ElfTool
This tool will help you to pack and unpack boot image for sony mobile devices.
Click to expand...
Click to collapse
Thanks for this tool. It helped me edit a kernel.
Btw, I've used the source to compile x86 version. I've attached it here.
I'm trying to use it on my ubuntu but it doesn't work. I get error: elftool: command not found
I want to unpack CM10 boot.img
Great. Will try it as soon as possible Thanks
I am using global ROM in TB-J706F but I wanted to extract the original wallpaper from chinese ROM, so I downloaded the one available in lolinet.
Then I did (I am using Linux):
Extract files
Merge super_* to a single file with
Bash:
cat super_1.img super_2.img super_3.img super_4.img > super.img
Extract system_a.img with
Bash:
lpunpack -p system_a super.img ./super
Now I don't know how to mount system_a.img, this is what I tried:
Bash:
> simg2img super/system_a.img super/system_a.ext4.img
Invalid sparse file format at header magic
Failed to read sparse file
Bash:
> sudo mount -t ext4 -o loop super/system_a.img ./system
mount: ./system: wrong fs type, bad option, bad superblock on /dev/loop2, missing codepage or helper program, or other error.
Bash:
> file super/system_a.img
super/system_a.img: data
What am I missing?
P.S.
Anyway if someone has the wallpaper and can upload it somewhere would be great.
MrCrayon said:
I am using global ROM in TB-J706F but I wanted to extract the original wallpaper from chinese ROM, so I downloaded the one available in lolinet.
Then I did (I am using Linux):
Extract files
Merge super_* to a single file with
Bash:
cat super_1.img super_2.img super_3.img super_4.img > super.img
Extract system_a.img with
Bash:
lpunpack -p system_a super.img ./super
Now I don't know how to mount system_a.img, this is what I tried:
Bash:
> simg2img super/system_a.img super/system_a.ext4.img
Invalid sparse file format at header magic
Failed to read sparse file
Bash:
> sudo mount -t ext4 -o loop super/system_a.img ./system
mount: ./system: wrong fs type, bad option, bad superblock on /dev/loop2, missing codepage or helper program, or other error.
Bash:
> file super/system_a.img
super/system_a.img: data
What am I missing?
P.S.
Anyway if someone has the wallpaper and can upload it somewhere would be great.
Click to expand...
Click to collapse
Have you read the link below?
Editing system.img inside super.img and flashing our modifications
I'm trying to modify my system.img (/system/build.prop) to include support for multi users. After struggling a lot, I've succeeded following your guide (that's an awesome work btw) to unpack, mount, modify, umount and repack super.img. Then...
forum.xda-developers.com
mardon85 said:
Have you read the link below?
Editing system.img inside super.img and flashing our modifications
I'm trying to modify my system.img (/system/build.prop) to include support for multi users. After struggling a lot, I've succeeded following your guide (that's an awesome work btw) to unpack, mount, modify, umount and repack super.img. Then...
forum.xda-developers.com
Click to expand...
Click to collapse
Yes, I got some of the commands from there, as far as I understand what they do there is aimed to mount system rw so I shouldn't need it, I tried to mount read only and it gives the same error.
Also I cannot use resize2fs or e2fsck because it's not recognized as an image, I get:
Bad magic number in super-block
I think system_a.img needs an additional step but it's not even compressed, so I'm stuck.
Ok, I solved it.
It was actually very easy, starting from the ROM:
Extract files
Mount super_2.img for system with:
Bash:
sudo mount -t ext4 -o ro,loop super_2.img ./system
The trick is that it needs to be mounted read only with ro.
Nicely done. Did you find the wallpaper?
Yes, it was in system/media/wallpaper.
I tried
mount -o rw,remount /system/
But
mount: '/system/' not in /proc/mounts
system-as-root = system is mounted as /, not /system
Permissions are fine.
DavidxxxD said:
system-as-root = system is mounted as /, not /system
Permissions are fine.
Click to expand...
Click to collapse
I can't write to / still
Are you root?
What is output of
Bash:
id
Bash:
su -c mount -o remount,rw /
Also try this to find out more
Bash:
mount | grep "/ "
DavidxxxD said:
Are you root?
What is output of
Bash:
id
Bash:
su -c mount -o remount,rw /
Also try this to find out more
Bash:
mount | grep "/ "
Click to expand...
Click to collapse
Bash:
berlna:/ $ id
uid=2000(shell) gid=2000(shell) groups=2000(shell),1004(input),1007(log),1011(adb),1015(sdcard_rw),1028(sdcard_r),1078(ext_data_rw),1079(ext_obb_rw),3001(net_bt_admin),3002(net_bt),3003(inet),3006(net_bw_stats),3009(readproc),3011(uhid),3012 context=u:r:shell:s0
Bash:
berlna:/ $ su -c mount -o remount,rw /
'/dev/block/dm-8' is read-only
Bash:
berlna:/ $ mount | grep "/ "
/dev/block/dm-8 on / type ext4 (ro,seclabel,relatime,discard)
And yes I have root
I've never seen this output from trying to remount. Could be a permanent read-only attribute somewhere. /dev/block/dm-8 looks like your system is on an encrypted partition, this could have something to do with the error. You can try using the busybox version of mount command. Also, does your device have a super partition? That could explain it.
DavidxxxD said:
I've never seen this output from trying to remount. Could be a permanent read-only attribute somewhere. /dev/block/dm-8 looks like your system is on an encrypted partition, this could have something to do with the error. You can try using the busybox version of mount command. Also, does your device have a super partition? That could explain it.
Click to expand...
Click to collapse
This is the same error i also face in oneplus os12 and yes my dev dm-x also is ro even after root
Its super.img and also i try with busybox
But useless
The only way now i can see is unpack backup super
Unpack edit repack and flash back
But its not possible for me
Rewriting the super partition every time, seems to be the only way in your case.
The lpflash tools are used to work with super partitions.
I've attatched a statically linked 64-bit ARM version that can run on the device, built from this source.
Extract the system image using
Bash:
./lpunpack -p system super.img
Note: This can also be run directly on the block device, it only reads.
From there, you can modify the system and add it to a super image (the firmware usually has sparse ones that need to be decompressed first). You could also flash the new system image directly via fastbootd mode.
Note: Ignore any "invaild sparse header" messages from fastboot.
Don't flash unsparse images on Samsung devices! They will not like it!
Hope this is helpful.
DavidxxxD said:
Rewriting the super partition every time, seems to be the only way in your case.
The lpflash tools are used to work with super partitions.
I've attatched a statically linked 64-bit ARM version that can run on the device, built from this source.
Extract the system image using
Bash:
./lpunpack -p system super.img
Note: This can also be run directly on the block device, it only reads.
From there, you can modify the system and add it to a super image (the firmware usually has sparse ones that need to be decompressed first). You could also flash the new system image directly via fastbootd mode.
Note: Ignore any "invaild sparse header" messages from fastboot.
Don't flash unsparse images on Samsung devices! They will not like it!
Hope this is helpful.
Click to expand...
Click to collapse
Its a super.img thx