/init: line 38: can't open /dev/sr0: No medium found /init: line 38: can't open /dev/sr0: No medium found useradd warning: ubuntu's uid 999 outside of the UID_MIN 1000 and UID_MAX 60000 range. passwd: password changed. dbus-daemon[740]: [session uid=999 pid=740] Activating service name='org.gtk.vfs.Daemon' requested by ':1.0' (uid=999 pid=741 comm="" label="unconfined") dbus-daemon[740]: [session uid=999 pid=740] Successfully activated service 'org.gtk.vfs.Daemon' dbus-daemon[740]: [session uid=999 pid=740] Activating service name='org.gtk.vfs.Metadata' requested by ':1.0' (uid=999 pid=741 comm="" label="unconfined") fuse: device not found, try 'modprobe fuse' first dbus-daemon[740]: [session uid=999 pid=740] Successfully activated service 'org.gtk.vfs.Metadata' A connection to the bus can't be made Using CD-ROM mount point /cdrom/ Identifying... [85c9848ea6f3b6ae11544f31ad347eb6-2] Scanning disc for index files... Found 2 package indexes, 0 source indexes, 0 translation indexes and 1 signatures Found label 'Ubuntu 23.04 _Lunar Lobster_ - Alpha amd64 (20230107)' This disc is called: 'Ubuntu 23.04 _Lunar Lobster_ - Alpha amd64 (20230107)' Copying package lists...gpgv: Signature made Sat Jan 7 08:14:34 2023 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 23.04 _Lunar Lobster_ - Alpha amd64 (20230107)]/ lunar main restricted Repeat this process for the rest of the CDs in your set.