Back up LUKS’s header of an encrypted volume
I read in the documentation of cryptsetup that if the LUKS header of a volume gets damaged, the volume can no longer be decrypted. Sometimes headers of volumes get damaged. The documentation suggests to (1) create a LUKS header backup and (2) save it to a file.
From cryptsetup’s man page:
sudo cryptsetup luksHeaderBackup /dev/sdbX --header-backup-file /var/tmp/nameofthebackupTo find the path to the name of the device, that is for example /dev/sdb2, you can run $ lsblk.
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