[dm-crypt] Restore LUKS partition

Sven Eschenberg sven at whgl.uni-frankfurt.de
Thu Dec 15 22:37:53 CET 2016

In case the first partition was encrypted, you won't stand a chance in 
restoring it, since the first partition starts on sector 2048 (1MByte 
from the bstart of the device). For obvious reasons the header would be 
gone and certainly some important parts of the FS.

If your encrypted partition was 8,17, as your data suggests, then the 
first partition was encrypted and is thus severly damaged. (sdb1)

So, if you do not have a header backup of the drives masterkey at hand, 
then this is a goner.



Am 15.12.2016 um 21:36 schrieb Oskar Jauch:
> Hi,
> I've accidentally overwritten the first 1.1 GB of my external hard drive
> with dd. As far as I remember the drive contained two partitions from
> which one was encrypted with LUKS. I'm not sure if the encrypted one was
> the first or the second one...
> I dumped the hole disc with ddrescue.
> I was able to extract the following from my laptop:
> luks-afe73a24-e4ab-4d49-90b9-119da11bc7c6: 0 5860526990 crypt
> aes-xts-plain64 [key (don't want to share it in this mail)] 0 8:17 4096
> Is there any possibility to restore anything of the encrypted data?
> Thank you in advance!
> Oskar
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