stdin: Not a typewriter stdin: Not a typewriter stdin: Not a typewriter umount: can't unmount /cdrom: Device or resource busy stdin: Not a typewriter stdin: Not a typewriter umount: can't unmount /cdrom: Device or resource busy stdin: Not a typewriter stdin: Not a typewriter umount: can't unmount /cdrom: Device or resource busy dbus-daemon[1287]: [session uid=999 pid=1287] Activating service name='org.gtk.vfs.Daemon' requested by ':1.0' (uid=999 pid=1288 comm="" label="unconfined") dbus-daemon[1287]: [session uid=999 pid=1287] Successfully activated service 'org.gtk.vfs.Daemon' dbus-daemon[1287]: [session uid=999 pid=1287] Activating service name='org.gtk.vfs.Metadata' requested by ':1.0' (uid=999 pid=1288 comm="" label="unconfined") fuse: device not found, try 'modprobe fuse' first dbus-daemon[1287]: [session uid=999 pid=1287] Successfully activated service 'org.gtk.vfs.Metadata' (gvfsd-metadata:1299): GUdev-CRITICAL **: 01:14:31.947: g_udev_device_has_property: assertion 'G_UDEV_IS_DEVICE (device)' failed (gvfsd-metadata:1299): GUdev-CRITICAL **: 01:14:31.947: g_udev_device_has_property: assertion 'G_UDEV_IS_DEVICE (device)' failed A connection to the bus can't be made Using CD-ROM mount point /cdrom/ Identifying... [fc36a078173a22d553c4410a7c473797-2] Scanning disc for index files... Found 7 package indexes, 0 source indexes, 0 translation indexes and 1 signatures Found label 'Xubuntu 18.04.1 LTS _Bionic Beaver_ - Release amd64 (20180725)' This disc is called: 'Xubuntu 18.04.1 LTS _Bionic Beaver_ - Release amd64 (20180725)' Copying package lists...gpgv: Signature made Wed Jul 25 03:28:35 2018 UTC gpgv: using RSA key D94AA3F0EFE21092 gpgv: Good signature from "Ubuntu CD Image Automatic Signing Key (2012) " Reading Package Indexes... 0% Reading Package Indexes... 0% Reading Package Indexes... Done Writing new source list Source list entries for this disc are: deb cdrom:[Xubuntu 18.04.1 LTS _Bionic Beaver_ - Release amd64 (20180725)]/ bionic main multiverse restricted universe deb cdrom:[Xubuntu 18.04.1 LTS _Bionic Beaver_ - Release amd64 (20180725)]/ kali-last-snapshot contrib main non-free Repeat this process for the rest of the CDs in your set.