How to navigate system image backup?

[RecoverVery]

Hello. I've got a backup of

mmcblk0

It's probably encrypted, but I'm not sure. If it is, I do have the password, but then I wouldn't know where to insert it.
Is there any detailed tutorial on how to mount this file and work with it? If it's a Linux solution then preferably some guide or tutorial on how exactly to figure out this mess.
Thanks for any help.

 

[Oswald Boelcke]

Hello. I've got a backup of

mmcblk0

It's probably encrypted, but I'm not sure. If it is, I do have the password, but then I wouldn't know where to insert it.
Is there any detailed tutorial on how to mount this file and work with it? If it's a Linux solution then preferably some guide or tutorial on how exactly to figure out this mess.
Thanks for any help.

Hello and good morning, @RecoverVery

Welcome to XDA! I hope you'll always get the support you require.
However, prior to your next posting please read the guidances that are stuck on top of every forum like

[Read Before Posting]QUESTIONS DO NOT BELONG IN GENERAL

Hello Everybody, In order to attempt to keep this forum neat and tidy the moderation team is asking you to post your questions into the Questions and Answers (Q&A) forum and not into the General section. You can find the Q&A forum by clicking...

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and the others. I've moved your thread to Android Q&A.

Thanks for your cooperation!
Regards
Oswald Boelcke
Senior Moderator

 

[alecxs]

I don't know what's the goal but you can extract the userdata partition from disk image with dd. the output of parted is in bytes, must divided by block size of your choice (bigger bs is faster)

parted mmcblk0 unit B print
dd if=mmcblk0 of=userdata.img skip=$off count=$len bs=$bs

another way is boot into TWRP from fastboot and pull the partition image directly.

fastboot devices
fastboot boot twrp-3.6.2_9-0-lavender.img
adb devices
adb pull /dev/block/bootdevice/by-name/userdata

Note: even if the partition image is mountable, the files are encrypted and manually decryption requires healthy keystore (not included in mmcblk0) and the device of origin itself.

Mate 9 - how to retrieve encrypted files from a broken system (userdata partition)

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