I have very little experience with linux, so maybe this is a dumb question :)
I run Ubuntu 24.04 on a machine, and I had an old HDD in a usb-case which I mounted using fstab. Worked fine, but I decided it wasn’t appropriate for my purpose and removed it (physically and from fstab).
But it still shows up in the file manager? What am I missing?
My guess is this is in GNOME? If there isn’t an eject button next to the mount name, that’s just a “favorites” link that got added, and not the actual mount. Right-click to remove it if you don’t need it anymore.