/init: line 7: can't open /dev/sr0: No medium found
/init: line 7: can't open /dev/sr0: No medium found
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... [0c2aa81fb456a06874e6f51932460f7b-2]
Scanning disc for index files...
Found 4 package indexes, 0 source indexes, 0 translation indexes and 1 signatures
Found label 'Lubuntu 17.04 _Zesty Zapus_ - Release i386 (20170412)'
This disc is called: 
'Lubuntu 17.04 _Zesty Zapus_ - Release i386 (20170412)'
Copying package lists...gpgv: Signature made Wed Apr 12 03:29:30 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:[Lubuntu 17.04 _Zesty Zapus_ - Release i386 (20170412)]/ zesty main multiverse restricted universe
Repeat this process for the rest of the CDs in your set.
W: No valid records were found.
grep: /root/etc/apt/apt.conf.d/50unattended-upgrades: No such file or directory