diff --git a/book/arch/02-prepare-disk.md b/book/arch/02-prepare-disk.md
index d63594a..df46649 100644
--- a/book/arch/02-prepare-disk.md
+++ b/book/arch/02-prepare-disk.md
@@ -10,12 +10,20 @@ List your disks with `lsblk` and run `gdisk /dev/[your disk]` e.g. `gdisk /dev/n
 > 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, we will do it later with the YubiKey.
+Don't format the partitions at this time, we 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 e.g. `/dev/nvme0n1p2` with: 
 
 ```
-mkfs.fat -F32 /dev/[your disk partition 2]
+mkfs.fat -F32 /dev/[disk 2nd partition]
 ```
 
 The next chapter describes how to prepare the YubiKey.