Protect data on hard drives with disk encryption

For a platform claiming a strong focus on privacy it's an essential feature to support hard disk encryption. Actually it should be default!

Everybody with physical access to the monument can read all pictures on it with really low effort.

There are a lot of cases why a general hard disk encryption for all drives is a good idea, e.g. theft, unauthorized physical access, losing the drive while bringing it to the off-site backup location, losing the drive while moving, police raids, disposal or reselling the disk.

dm-crypt/luks are excellent and easy to implement solution for this feature request.