stdin: Not a typewriter
Generating locales (this might take a while)...
Generation complete.
pwconv: failed to change the mode of /etc/passwd- to 0600
Using CD-ROM mount point /cdrom/
Identifying... [f48852eef53892cd7d630f0b749680da-2]
Scanning disc for index files...
Found 4 package indexes, 0 source indexes, 0 translation indexes and 1 signatures
Found label 'Ubuntu-Studio 17.04 _Zesty Zapus_ - Beta amd64 (20170321)'
This disc is called: 
'Ubuntu-Studio 17.04 _Zesty Zapus_ - Beta amd64 (20170321)'
Copying package lists...gpgv: Signature made Tue Mar 21 07:28:40 2017 UTC
gpgv:                using RSA key 
gpgv: Good signature from "Ubuntu CD Image Automatic Signing Key (2012) <cdimage@ubuntu.com>"

Reading Package Indexes... 0%

Reading Package Indexes... Done
Writing new source list
Source list entries for this disc are:
deb cdrom:[Ubuntu-Studio 17.04 _Zesty Zapus_ - Beta amd64 (20170321)]/ zesty main multiverse restricted universe
Repeat this process for the rest of the CDs in your set.
W: No valid records were found.