stdin: I/O error
stdin: I/O error
stdin: I/O error
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... [418c9b514aaf3341037f80952597ba1f-2]
Scanning disc for index files...
Found 4 package indexes, 0 source indexes, 0 translation indexes and 1 signatures
Found label 'Lubuntu 16.04.1 LTS _Xenial Xerus_ - Release amd64 (20160720)'
This disc is called: 
'Lubuntu 16.04.1 LTS _Xenial Xerus_ - Release amd64 (20160720)'
Copying package lists...gpgv: Signature made Wed Jul 20 12:15:50 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:[Lubuntu 16.04.1 LTS _Xenial Xerus_ - Release amd64 (20160720)]/ xenial main multiverse restricted universe
Repeat this process for the rest of the CDs in your set.