stdin: Not a typewriter
Generating locales (this might take a while)...
Generation complete.
chroot: can't execute 'glib-compile-schemas': No such file or directory
pwconv: failed to change the mode of /etc/passwd- to 0600
ln: /root/usr/lib/update-notifier/apt-check: No such file or directory
Using CD-ROM mount point /cdrom/
Identifying... [a207dcda63fd05955bf08a8c1a52dd2f-2]
Scanning disc for index files...
Found 4 package indexes, 0 source indexes, 0 translation indexes and 1 signatures
Found label 'Kubuntu 16.04 LTS _Xenial Xerus_ - Beta amd64 (20160414)'
This disc is called: 
'Kubuntu 16.04 LTS _Xenial Xerus_ - Beta amd64 (20160414)'
Copying package lists...gpgv: Signature made Thu Apr 14 05:41:01 2016 UTC using DSA key ID FBB75451
gpgv: Good signature from "Ubuntu CD Image Automatic Signing Key <cdimage@ubuntu.com>"

Reading Package Indexes... 0%

Reading Package Indexes... Done
Writing new source list
Source list entries for this disc are:
deb cdrom:[Kubuntu 16.04 LTS _Xenial Xerus_ - Beta amd64 (20160414)]/ xenial main multiverse restricted universe
Repeat this process for the rest of the CDs in your set.