shamelessly stolen from nixCraft on mastodon
this post was submitted on 05 Dec 2023
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How can I figure out which direct device is associated with a specific id?
Not sure if it is equal on all distros but on every one I have used it's a readable string of muliple components. One of them is "usb" for a usb mass storage, so if it is the only one you have connected to your computer it is very obvious. For like sata disks it has the manufacturer and serial on it so you can match what drive it is you want to write to. Also, the name is pretty unique (on your sysytem at least, globally I don't know), so even if you swap hardware around, you cannot write to the wrong storage if you got the right name. Like "sdb" can be reassigned, but the id is an id.
They're symlinks, so you can just
ls -l /dev/disk/by-id, and you can see what is what.ˋblkidˋ or take a look around /dev, devices are symlinked to their various attributes.