Get the “/dev/disk/by-id” information for FSTab from the udevadm command

To start with, you will need to use the disk name only without the partition name. When you go into /dev/disk/by-id and investigate the names, it will be named “part-1, part-2” etc at the end of the ID name. Ignore these for now. Do fdisk -l and get the disk name.

Run the below command:

udevadm info -q symlink --path=/sys/block/<DRIVE-NAME> | awk '{print "/dev/" $1}'

Repeat this command until you have “nvme-eui.ID” or "sci-ID" as the first time you run it, it may list the “by-path/” statement which isn't helpful or the actual “by-id/DISKNAME” which is what we want.

Once you've found the ID, go to /dev/disk/by-id and look for the partition you want from fdisk -l. Use this to correlate the lists together. 

For example, /dev/sda3 is going to be "part-3" from the ID list.

DO NOT IGNORE THIS WARNING. IT IS CRUCIAL TO READ.

Note: Make sure you set the drive to ext4 before rebooting so it actually knows how to handle the partition. If you don't, the partition won't actually mount and when you reboot you will get put into initramfs, so have rescue mode on standby with a KVM!

Go into nano /etc/fstab and add the /dev/disk/by-id/IDNAME-PARTX into the FSTab. Example below for nvme0n1p1’s part 1, the partition for the datastore, ext4, defaults, 0, 1.