"When you write random data to the disk, you will also destroy the boot mount" Except for when you don't... It would be perfectly reasonable for somebody to ju

"When you write random data to the disk, you will also destroy the boot mount" Except for when you don't... It would be perfectly reasonable for somebody to just overwrite the partition containing the encrypted data, and not the entire disk. Some people stick their /boot/ partition on external storage which they carry on their person to make Evil Maid attacks more difficult. The drives on those peoples laptops will only contain encrypted data.