60 lines
2.4 KiB
Markdown
60 lines
2.4 KiB
Markdown
# Prepare Volumes
|
|
|
|
Please take a look at the Arch Wiki page [Preparing the logical volumes](https://wiki.archlinux.org/index.php/Dm-crypt/Encrypting_an_entire_system#Preparing_the_logical_volumes "preparing the logical volumes")
|
|
to create `/` and `/home` directory/partitions. In short you do this (without swap).
|
|
|
|
> The filesystem *ext4* is used.
|
|
|
|
```
|
|
pvcreate /dev/mapper/cryptlvm
|
|
vgcreate MyVolGroup /dev/mapper/cryptlvm
|
|
|
|
lvcreate -L 30G MyVolGroup -n root
|
|
lvcreate -l 100%FREE MyVolGroup -n home
|
|
|
|
mkfs.ext4 /dev/MyVolGroup/root
|
|
mkfs.ext4 /dev/MyVolGroup/home
|
|
|
|
mount /dev/MyVolGroup/root /mnt
|
|
mkdir /mnt/home
|
|
mount /dev/MyVolGroup/home /mnt/home
|
|
```
|
|
|
|
## Encrypted boot partition
|
|
|
|
The last volume is `/boot` which should also be encrypted. You can not use a YubiKey here, but it is protected with a password.
|
|
The Arch Wiki page [Preparing the boot partition](https://wiki.archlinux.org/index.php/Dm-crypt/Encrypting_an_entire_system#Preparing_the_boot_partition_5 "Preparing the boot partition")
|
|
describes this in more detail. The `efi` partition will be mounted to `/boot/efi`.
|
|
|
|
> Be aware, GRUB boot loader uses US keyboard layout. Consider this for your password!
|
|
|
|
Execute the following commands and replace `[device 3rd partition]` with the 3rd partition of your device e.g. `nvme0n1p3`
|
|
and replace `[device 2nd partition]` with the 2nd partition of your device e.g. `nvme0n1p2`.
|
|
|
|
```
|
|
cryptsetup luksFormat /dev/[device 3rd partition]
|
|
cryptsetup open /dev/[device 3rd partition] cryptboot
|
|
|
|
ls /dev/mapper
|
|
|
|
mkfs.ext4 /dev/mapper/cryptboot
|
|
|
|
mkdir /mnt/boot
|
|
mount /dev/mapper/cryptboot /mnt/boot
|
|
|
|
mkdir /mnt/boot/efi
|
|
mount /dev/[device 2nd partition] /mnt/boot/efi
|
|
```
|
|
|
|
## Keyfile for initramfs
|
|
[With a keyfile embedded in the initramfs](https://wiki.archlinux.org/index.php/Dm-crypt/Device_encryption#With_a_keyfile_embedded_in_the_initramfs "With a keyfile embedded in the initramfs")
|
|
you don't have to unlock the `/boot` partition twice. The `/boot` partition will be mounted if the system starts, so updates can be performed.
|
|
|
|
Create a randomized generated key file with the following lines and add this keyfile to the 3rd LUKS partition (replace `[device 3rd partition]` with the 3rd partition of your device e.g. `nvme0n1p3`).
|
|
The keyfile is copied in the root folder of the new Arch linux environment.
|
|
|
|
```
|
|
dd bs=512 count=4 if=/dev/urandom of=/mnt/crypto_keyfile.bin
|
|
chmod 000 /mnt/crypto_keyfile.bin
|
|
cryptsetup luksAddKey /dev/[device 3rd partition] /mnt/crypto_keyfile.bin
|
|
``` |