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remove references to sda3

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This commit is contained in:
Alexander Bocken 2023-10-17 15:09:34 +02:00
parent e17201e8e9
commit d9e33fc1de
Signed by: Alexander
GPG Key ID: 1D237BE83F9B05E8
1 changed files with 7 additions and 7 deletions
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14
docs/luks2.md
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@ -15,8 +15,8 @@ Note: for BIOS systems a dummy 1M parition would be also required. For UEFI this
## Create LVM ## Create LVM
```sh ```sh
cryptsetup luksFormat /dev/sda3 cryptsetup luksFormat /dev/sda2
cryptsetup open /dev/sda3 cryptlvm cryptsetup open /dev/sda2 cryptlvm
pvcreate /dev/mapper/cryptlvm pvcreate /dev/mapper/cryptlvm
vgcreate vg /dev/mapper/crypylvm vgcreate vg /dev/mapper/crypylvm
``` ```
@ -102,7 +102,7 @@ and add to `GRUB_CMDLINE_LINUX`: (can have multiple, space-separated arguments s
```/etc/default/grub ```/etc/default/grub
GRUB_CMDLINE_LINUX="cryptdevice=UUID=device-UUID:cryptlvm" GRUB_CMDLINE_LINUX="cryptdevice=UUID=device-UUID:cryptlvm"
``` ```
and replace "device-UUID" with the uuid we got for `/dev/sda3` from the previous `ls` command. Of course remove all the trailing `ls` output. and replace "device-UUID" with the uuid we got for `/dev/sda2` from the previous `ls` command. Of course remove all the trailing `ls` output.
```sh ```sh
grub-install --target=x86_64-efi --efi-directory=/efi --bootloader-id=GRUB --recheck grub-install --target=x86_64-efi --efi-directory=/efi --bootloader-id=GRUB --recheck
@ -120,7 +120,7 @@ set prefix=($root)/boot/grub
insmod normal insmod normal
normal normal
``` ```
and replace device-UUID with the same device-UUID as before, (again, a `ls -l /dev/disk/by-uuid >> /boot/grub/grub-pre.cfg` can help here to get the UUID for `/dev/sda3`) and replace device-UUID with the same device-UUID as before, (again, a `ls -l /dev/disk/by-uuid >> /boot/grub/grub-pre.cfg` can help here to get the UUID for `/dev/sda2`)
Now we can overwrite our previously generated grubx64.efi with a luks2 compatible one: Now we can overwrite our previously generated grubx64.efi with a luks2 compatible one:
```sh ```sh
@ -135,7 +135,7 @@ Create a keyfile:
```sh ```sh
dd bs=512 count=4 if=/dev/random of=/crypto_keyfile.bin iflag=fullblock dd bs=512 count=4 if=/dev/random of=/crypto_keyfile.bin iflag=fullblock
chmod 600 /crypto_keyfile.bin chmod 600 /crypto_keyfile.bin
cryptsetup luksAddKey /dev/sda3 /crypto_keyfile.bin cryptsetup luksAddKey /dev/sda2 /crypto_keyfile.bin
``` ```
Add this to the initramfs: Add this to the initramfs:
```/etc/mkinitcpio.conf ```/etc/mkinitcpio.conf
@ -167,8 +167,8 @@ cryptsetup luksFormat /dev/sdX
cryptsetup open /dev/sdX YourDiskNameHere cryptsetup open /dev/sdX YourDiskNameHere
mkfs.ext4 /dev/mapper/YourDiskNameHere mkfs.ext4 /dev/mapper/YourDiskNameHere
``` ```
If you do not wish to have to enter the additional password on boot-up you will have to create a keyfile like we did for our /dev/sda3 above. If you do not wish to have to enter the additional password on boot-up you will have to create a keyfile like we did for our /dev/sda2 above.
Of course this will lessen security as any additional hard-drives can also be decrypted if `/dev/sda3` has been decrypted or cracked. Of course this will lessen security as any additional hard-drives can also be decrypted if `/dev/sda2` has been decrypted or cracked.
Systemd can autodetec keys in `/etc/cryptsetup-keys.d` if they have the pattern `YourDiskNameHere.key`. Create this directory if not already present: Systemd can autodetec keys in `/etc/cryptsetup-keys.d` if they have the pattern `YourDiskNameHere.key`. Create this directory if not already present:
```sh ```sh