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Help recovering erased SD card from Samsung phone

Posted: 13 Apr 2019, 14:27
by civvie
Hello,

My Samsung S8 phone and SD card were accidentally erased (a 'find my phone' mishap). :(

Many photos and videos were on the 64GB SD card.

I ran a scan with photorec and it saved a few 'recup_dir' folders to my computer.
In one of them is a 'f0044800.sqlite' file that is 64GB big.

I don't really know what I'm doing and if the scan was successful or not, or what to do with these files if so...
Can anyone give advice or point me towards a simple how-to SD card recovery for dummies like me?

I'm using a Mac, OS 10.12.6

Thank you!

Re: Help recovering erased SD card from Samsung phone

Posted: 14 Apr 2019, 19:41
by cgrenier
Run PhotoRec, in Options, enable the Expert mode, start the recovery, choose a blocksize of 512 bytes, use the defaults options otherwise.
Does it work better ?

Re: Help recovering erased SD card from Samsung phone

Posted: 15 Apr 2019, 14:58
by civvie
Thanks you! Where do I change the blocksize?

Re: Help recovering erased SD card from Samsung phone

Posted: 15 Apr 2019, 16:38
by recuperation
When you are running photorec, at least in the version 7.0 that I have, you are asked for a block size after selection a directory for recovery.

Re: Help recovering erased SD card from Samsung phone

Posted: 16 Apr 2019, 12:26
by civvie
OK - Thanks for the tips.

So, in expert mode, I've tried.

Partition: No partition [whole disk]
Filesystem: [Other] FAT/NTFS/...etc - I've also tried [ext2/ext3]
Try to unformat a FAT filesystem: No
(If I choose Yes here then it just starts and I don't get an option to select Blocksize)
-Then it starts but if I hit enter on 'Stop' then I get the menu to select blocksize
Blocksize: 512 (not 512k - correct?)

Everything I've tried so far just produces a few files:
report.xml
f0044800.sqlite (64GB)
f0030976.plist
f00330246.plist

That's it.

Am I screwed? :(

Re: Help recovering erased SD card from Samsung phone

Posted: 16 Apr 2019, 13:01
by recuperation
Hello civvie,

maybe your "accident" involved a "Format"-operation?
Please clone the SD card and try out the "Unformat option".

It's somehow strange that photorec did not find any jpeg-file.
Have you excluded some file formats?

Re: Help recovering erased SD card from Samsung phone

Posted: 16 Apr 2019, 13:13
by civvie
Hello.
Yes I assume it was formatted when phone erased its self - possibly a 'secure format' which might mean I'm toast (I didn't do this by the way - a friend did - long story...)

I have an image .dmg of the entire SD that another recovery program made. So that's a backup.

I haven't excluded any filetypes, default settings - apart from Expert Mode.

I think I tried Unformat already - When I do that I can't select the Blocksize though - is that right?

Re: Help recovering erased SD card from Samsung phone

Posted: 16 Apr 2019, 14:25
by recuperation
Hello cievvie,
civvie wrote:
16 Apr 2019, 13:13
Hello.
Yes I assume it was formatted when phone erased its self - possibly a 'secure format' which might mean I'm toast (I didn't do this by the way - a friend did - long story...)

I have an image .dmg of the entire SD that another recovery program made. So that's a backup.

I haven't excluded any filetypes, default settings - apart from Expert Mode.

I think I tried Unformat already - When I do that I can't select the Blocksize though - is that right?
I don't know, unfortunately!
I would recommend retrying using the dmg-image to see if that gives a different result.