Hi, Long Wind wrote: > how can i run blkid in buster? According to apt-file "search" it is in package "util-linux". https://packages.debian.org/buster/amd64/util-linux/filelist says that it is there as /sbin/blkid If you try "blkid" with the typical $PATH of a non-superuser, then you probably have to give its full path $ /sbin/blkid /dev/sr0 /dev/sr0: UUID="2017-11-15-12-24-27-00" LABEL="ISOIMAGE" TYPE="iso9660" Have a nice day :) Thomas