[dm-crypt] yet another "lost my partition" message

Arno Wagner arno at wagner.name
Wed Apr 13 03:10:33 CEST 2011

Hi Hugo,

first, there is a lot of info inthe FAQ here:

Best boot a resuce system and try to decrypt the partition
manually with cryptsetup. If that works with any of the
possible passphrases, then all your data is still there.
If not, best post the error message here.

Manual decryption should work with a command like this:

> cryptsetup luksOpen /dev/<your device> e1

Afterwards the decrypted device is  /dev/mapper/e1
You can mount that normally.

You can get header details like this:

> cryptsetup luksDump /dev/<your partition>

Ubuntu should have a resuce mode or life-cd mode that
allows you to do this.


On Tue, Apr 12, 2011 at 05:13:17PM -0300, Hugo Melo wrote:
> Hi everyone,
> I've just lost my home partition trying to reinstall ubuntu.
> On the installation process, trying to configure my encrypted home
> partition, I thought it was going to mount my partition but it was asking
> for the new key.
> After that I rebooted and didn't make any other changes to my partition.
> It seems the partitioner used "cryptsetup luksFormat". Do you think I can
> still restore my partition?
> I used the same passphrase configured for my home.
> Thanks on any light
> -- 
> -- Hugo Melo

> _______________________________________________
> dm-crypt mailing list
> dm-crypt at saout.de
> http://www.saout.de/mailman/listinfo/dm-crypt

Arno Wagner, Dr. sc. techn., Dipl. Inform., CISSP -- Email: arno at wagner.name 
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