i'm novice in linux, I have a problem with encrypting root fs and it has failure in the following error message when i want to use cryptsetup to provide encrytion layer , with this error:
Command failed: BLKROGET failed on device: Inappropriate ioctl for device
is seems because of not existing 'dm_mod' module in kernel, is it true?
if that's the reason, now! how can i catch it, that's not exist im my available repository, please guide me what must i do? i didn't find it in mirrors for source