I had to restore a disk encrypted with PGP Whole Disk Encryption from a DriveSnapshot backup. I posted about the general idea, but the following are the steps of a real one:
# /dev/sda is the drive I needed to restore
# /dev/sdb1 contained the backup files and fullcd.iso
mount /dev/shm
mount -o ro /dev/sdb1 /media/sdb1
qemu -hda /dev/sdb -hdb /dev/sda -cdrom /media/sdb1/fdfullcd.iso -boot d
snapshot show hd2
snapshot show file.sna
snapshot restore hd2 mbrall file.sna
snapshot restore hd2 auto file.sna
xfdisk -> install boot manager (overriding pgp bootloader) -> create new menu entry pointing to the partition.
reboot.
