09/01/2012 05:03, yudi v wrote:
I am trying to back up the LUKS header and LUKS FAQ recommend using
the cryptsetup luksHeaderBackup command.
[cut]
I only have one partition that uses LUKS, sda4. It's a GPT disk and
the partitions are as follows
sda1 = ESP
sda2 = EF02
sda3 = /boot
sda4 = luks = rest of the disk.
On my system, there is just /dev/mapper/sda4, I am guessing this is
the devise I need to back up or is it the whole hard drive just like
backing up a MBR.
I am guessing the command I need to use on my system is:
cryptsetup luksHeaderBackup /dev/mapper/sda4 --header-backup-file
/media/USB_stick
Is this interpretation right?
--
Kind regards,
Yudi
Yes, I am using this regularly. Backing up the headers to encrypted
media (two preferably) is good practice, even if one can foresee a bit
off a circle here ;-) . Header backups are easier to break than original
LUKS container.
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