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ykfde/book/arch/02-prepare-disk.md
2018-12-29 13:22:32 +01:00

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# Prepare Disks
You have [different choices](https://wiki.archlinux.org/index.php/Dm-crypt/Encrypting_an_entire_system "dm-crypt/Encrypting an entire system") to setup encryption.
This chapter describes [LVM on LUKS with encrypted boot partition](https://wiki.archlinux.org/index.php/Dm-crypt/Encrypting_an_entire_system#Encrypted_boot_partition_.28GRUB.29 "Encrypted boot partition (GRUB)").
Because we want to unlock all volumes at once.
List your disks with `lsblk` and run `gdisk /dev/[your disk]` e.g. `gdisk /dev/nvme0n1`. You can take a look at the
`gdisk` Arch Wiki [en](https://wiki.archlinux.org/index.php/Gdisk) / [de](https://wiki.archlinux.de/title/GPT#Partitionieren_mit_gdisk)
> It's crucial to use `gdisk` because GPT is needed for UEFI boot.
Please create 4 partition like described in the Arch Wiki above with `gdisk`. Use the codes for the partition type.
Don't format the partitions at this time, you will do it later with the YubiKey. It should look similar like this.
```
Number Start (sector) End (sector) Size Code Name
1 2048 4095 1024.0 KiB EF02 BIOS boot partition
2 4096 1232895 600.0 MiB EF00 EFI System
3 1232896 2461695 600.0 MiB 8300 Linux filesystem
4 2461696 2000409230 952.7 GiB 8E00 Linux LVM
```
The second partition contains the EFI System and must be of type FAT32.
Format the second partition (replace `[device 2nd partition]` with the 2nd partition of your device e.g. `/dev/nvme0n1p2`) with:
```
mkfs.fat -F32 /dev/[device 2nd partition]
```
Great, one step closer for your fully encrypted system. The next chapter describes how to prepare the YubiKey.