This guide is for Ubuntu MATE 22.04, but should work for any Ubuntu 22.04 spin. The disk will be mounted at the user level, not the system level.

We need to obtain the UUID of the disk. In a terminal, execute the following:

ls -al /dev/disk/by-uuid/

Open the Startup Applications Preferences app (MATE Menu->Preferences->Startup Applications). Click the Add button.

Provide a meaningful name. In the Command field, enter the following:

udisksctl mount -b /dev/disk/by-uuid/UUID

Replace “UUID” with the desired disk’s UUID, and then click the Save button.