How to mount a luks encrypted partition at boot

Question

I have been given a task to creat a LUKS encrypted partition and then mount it, here are the steps I followed:

Create the partition for encryption:
```
sudo fdisk /dev/sda
```
Reboot
Format the partition with cryptsetup:
```
sudo cryptsetup luksFormat /dev/sda3
```

Open encrypted partition:

sudo cryptsetup luksOpen /dev/sda3 secret-disk

Add the following to /etc/crypttab:
```
secret-disk       /dev/sda3
```

Make filesystem on partition:

sudo mkfs -t ext3 /dev/mapper/secret-disk

Make mount directory:
```
sudo mkdir /secret
```

Add the following to /etc/fstab:

/dev/mapper/secret-disk   /secret   ext4 defaults 1 2

Mount partition at /secret:
```
sudo mount /secret OR sudo mount -a
```
Reboot.

Problem: During reboot, the mount instruction in fstab returns the error : device not ready or not present. And I have to enter S to skip the mount so ubuntu can boot or M to recover it manually. I have checked this option but it does not solve mine. How do I get the encrypted partition to mount at /secret.

score 3 · Accepted Answer · answered Jul 12 '16 at 17:27

3

The solution was to add this secret-disk /dev/sda3 none luks to the /etc/crypttab file as admin and reboot. The passphrase will be requested, and the encrypted partition unlocked.

answered Jul 12 '16 at 17:27

George Udosen

37,534

How to mount a luks encrypted partition at boot

1 Answers1