stdin: Not a typewriter
/init: line 7: can't open /dev/sr0: No medium found
/init: line 7: can't open /dev/sr0: No medium found
stdin: Not a typewriter
mount: mounting /cow on /root failed: Invalid argument
Generating locales...
  sv_SE.UTF-8... done
Generation complete.
pwconv: failed to change the mode of /etc/passwd- to 0600
Using CD-ROM mount point /cdrom/
Identifying... [0705201ad9260a13a4d1be91b8fda3b3-2]
Scanning disc for index files...
Found 4 package indexes, 0 source indexes, 0 translation indexes and 1 signatures
Found label 'Lubuntu 15.04 _Vivid Vervet_ - Alpha i386 (20141217)'
This disc is called: 
'Lubuntu 15.04 _Vivid Vervet_ - Alpha i386 (20141217)'
Copying package lists...gpgv: Signature made Wed Dec 17 17:03:10 2014 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 15.04 _Vivid Vervet_ - Alpha i386 (20141217)]/ vivid main multiverse restricted universe
Repeat this process for the rest of the CDs in your set.