stdin: Not a typewriter /init: line 49: can't open /dev/sr0: No medium found /init: line 49: can't open /dev/sr0: No medium found stdin: Not a typewriter /init: line 49: can't open /dev/sr0: No medium found /init: line 49: can't open /dev/sr0: No medium found stdin: Not a typewriter /init: line 49: can't open /dev/sr0: No medium found /init: line 49: can't open /dev/sr0: No medium found stdin: Not a typewriter passwd: password expiry information changed. dbus-daemon[1196]: [session uid=999 pid=1196] Activating service name='org.gtk.vfs.Daemon' requested by ':1.0' (uid=999 pid=1197 comm="" label="unconfined") dbus-daemon[1196]: [session uid=999 pid=1196] Successfully activated service 'org.gtk.vfs.Daemon' dbus-daemon[1196]: [session uid=999 pid=1196] Activating service name='org.gtk.vfs.Metadata' requested by ':1.0' (uid=999 pid=1197 comm="" label="unconfined") fuse: device not found, try 'modprobe fuse' first dbus-daemon[1196]: [session uid=999 pid=1196] Successfully activated service 'org.gtk.vfs.Metadata' A connection to the bus can't be made Using CD-ROM mount point /cdrom/ Identifying... [e24f38fc2b4a76f30297bb1228c0635d-2] Scanning disc for index files... Found 2 package indexes, 0 source indexes, 0 translation indexes and 1 signatures Found label 'Ubuntu 21.04 _Hirsute Hippo_ - Release amd64 (20210420)' This disc is called: 'Ubuntu 21.04 _Hirsute Hippo_ - Release amd64 (20210420)' Copying package lists...gpgv: Signature made Tue Apr 20 11:16:10 2021 UTC gpgv: using RSA key 843938DF228D22F7B3742BC0D94AA3F0EFE21092 gpgv: Good signature from "Ubuntu CD Image Automatic Signing Key (2012) " Reading Package Indexes... 0% Reading Package Indexes... Done Writing new source list Source list entries for this disc are: deb cdrom:[Ubuntu 21.04 _Hirsute Hippo_ - Release amd64 (20210420)]/ hirsute main restricted Repeat this process for the rest of the CDs in your set.