First disconnect the disk; next run lsblk >lsblk.old, next connect the disk, next run lsblk >lsblk.new. Finally do a diff on lsblk.old lsblk.new and see if something shows up in lsblk.new that isn't in lsblk.old. On Mon, 31 May 2021, Long Wind wrote: > i have new usb 3 diski want to find out if usb 3 is used when it's connected to stretch >