I am trying to backup the whole android OS with all kernel files, systemfiles, efs-data and more on my rooted samsung galaxy s3 but when I open the the backupfile (.ab) on my computer i can only see two folders:
I used the following adb-switches
adb backup -apk -shared -all -f ~/Backups/i9300/s320150523.ab
I cannot see any OS-parts in these folders such as libraries (.so files), kernelfiles, efs-folder and so on.
And when looking at the switches using adb-help it seems only be concerned with backup the apps and systemapps, not the OS-parts.
adb backup [-f <file>] [-apk|-noapk] [-shared|-noshared] [-all] [-system|-nosystem] [<packages...>] - write an archive of the device's data to <file>. If no -f option is supplied then the data is written to "backup.ab" in the current directory. (-apk|-noapk enable/disable backup of the .apks themselves in the archive; the default is noapk.) (-shared|-noshared enable/disable backup of the device's shared storage / SD card contents; the default is noshared.) (-all means to back up all installed applications) (-system|-nosystem toggles whether -all automatically includes system applications; the default is to include system apps) (<packages...> is the list of applications to be backed up. If the -all or -shared flags are passed, then the package list is optional. Applications explicitly given on the command line will be included even if -nosystem would ordinarily cause them to be omitted.)
If it is so that adb cannot backup the whole image - what are the alternatives? Could an app such as titanium-backup solve this issue?