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Maxime Luce avatar Ubuntu

Copy of a hard disk, error during the mount because of luks

ve flag
Maxime Luce

A few weeks ago I encrypted an external hard drive with luks and the header bugged. I can still open the drive with my password but it shows me an empty folder. So I made a copy of the whole disk with a .dd (after opening it). And when I try to mount the .dd, same empty folder. I have a "lost+found" folder and when I do e2fsck with it I get this:

e2fsck -b 32768 'lost+found' 
e2fsck 1.45.5 (07-Jan-2020)
e2fsck: Is a directory while trying to open lost+found

The superblock could not be read or does not describe a valid ext2/ext3/ext4
filesystem.  If the device is valid and it really contains an ext2/ext3/ext4
filesystem (and not swap or ufs or something else), then the superblock
is corrupt, and you might try running e2fsck with an alternate superblock:
    e2fsck -b 8193 <device>
 or
    e2fsck -b 32768 <device>

When I open the disk and do e2fsck on the device, I get this:

sudo e2fsck luks-adf42aa0-9542-416b-93b2-44e0fd12fa32
e2fsck 1.45.5 (07-Jan-2020)
ext2fs_open2: Bad magic number in super-block
e2fsck: Superblock invalid, trying backup blocks...
e2fsck: Bad magic number in super-block while trying to open luks-adf42aa0-9542-416b-93b2-44e0fd12fa32

The superblock could not be read or does not describe a valid ext2/ext3/ext4
filesystem.  If the device is valid and it really contains an ext2/ext3/ext4
filesystem (and not swap or ufs or something else), then the superblock
is corrupt, and you might try running e2fsck with an alternate superblock:
    e2fsck -b 8193 <device>
 or
    e2fsck -b 32768 <device>

Found an atari partition table in luks-adf42aa0-9542-416b-93b2-44e0fd12fa32

Do you have any idea what to do? Thanks a lot in advance

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Nmath avatar
ng flag
Nmath
How did the header get "bugged"? If the header is corrupted or missing on a luks volume, you won't be able to decrypt or access any data unless you made a backup. Making a copy won't help in this situation because you'd just copy whatever problem from the original.
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Maxime Luce avatar
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Maxime Luce
@Nmath It's a maxtor hard drive and I had a software to open a password protected part on windows. When I switched to Linux, I deleted this partition and encrypted it with Luks following a tutorial. And I got a message that the header was bugged and since then, every time I enter the password, it opens but I have an empty folder. Is there really no way to recover the data? But when I make the copy afterwards with dd, I'm supposed to have kept everything even if it's encrypted, right?
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Nmath avatar
ng flag
Nmath
dd copies bit-for-bit indiscriminately, so the destination will be exactly like the source.
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Maxime Luce avatar
ve flag
Maxime Luce
Yes so what can I do ? Is there a compagny that can found again my data ?
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Nmath avatar
ng flag
Nmath
You can bring it to a data recovery specialist. They charge a small fortune and based on your description, it's very unlikely they are going to find anything. Without the header and the ability to decrypt, everything will be scrambled by encryption.
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Maxime Luce avatar
ve flag
Maxime Luce
Ok thank you @Nmath ! Cheers
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