So, I’m trying to clone an SSD to an NVME drive and I’m bumping into this “dev-disk-by” error when I boot from the NVME (the SSD is unplugged).
I can’t find anyone talking about this in this context. It seems like what I’ve done here should be fine and should work, but there’s clearly something I and the arch wiki are missing.
probably the disk UUID has changed because of the path to the NVMe vs SSD. If you use partition UUID, they will be exactly the same, but the UUID of the physical disk is not cloned, as it is a identifier of the physical device and not it’s content.
change it to partition UUID and it will boot.
So I fixed this by using clonezilla (which seemed to fix things up automatically), but for my edification, how do you get the UUID of the device itself? The only UUIDs I was seeing seemingly were the partition UUIDs.
sorry for the late reply, the command ‘lsblk’ can output it:
“sudo lsblk -o +uuid,name”
check “man lsblk” to see all possible combinations if needed.
there is also ‘blkid’ but I’m unsure whether that package is installed by default on all Linux releases, so that’s why I chose ‘lsblk’
if ‘blkid’ is installed, the syntax would be:
“sudo blkid /dev/sda1 -s UUID -o value”
glad you got it fixe, and hope this answers your question
(edit pga big thumbs and autocorrect… )
also, remember that the old drive now share the UUID with the NVMe drive (which is why I recommended using partition UUID and not disk UUID), so you will have to create a new GPT signature on the old drive to avoid boot issues if both drives are connected at the same time during boot, otherwise you might run into boot issues or booting from the wrong drive.
Definitely second this. If you’re using LVM, it uses the physical UUID for the pv. You have to update that on the new drive so it knows where the vg and lvs are being mounted to.
There wasn’t any LVM involved, it’s AFAIK pretty rare outside of MBR installs (as GPT typically lets you have more than enough partitions).
LVM is actually super common. Most Linux distros default to LVM unless you do custom partitioning. It’s not just about the max number of partitions supported by the table. LVM provides a TON more flexibility and ease of management of partitions.