/init: line 7: can't open /dev/sr0: No medium found /init: line 7: can't open /dev/sr0: No medium found /init: line 7: can't open /dev/sr0: No medium found /init: line 7: can't open /dev/sr0: No medium found /init: line 7: can't open /dev/sr0: No medium found /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... [da67f70ab01ab8b27f85408a52e6d87b-2] Scanning disc for index files... Found 4 package indexes, 0 source indexes, 0 translation indexes and 1 signatures Found label 'Lubuntu 16.10 _Yakkety Yak_ - Alpha i386 (20160527)' This disc is called: 'Lubuntu 16.10 _Yakkety Yak_ - Alpha i386 (20160527)' Copying package lists...gpgv: Signature made Fri May 27 17:41:51 2016 UTC using DSA key ID FBB75451 gpgv: Good signature from "Ubuntu CD Image Automatic Signing Key " Reading Package Indexes... 0% Reading Package Indexes... Done Writing new source list Source list entries for this disc are: deb cdrom:[Lubuntu 16.10 _Yakkety Yak_ - Alpha i386 (20160527)]/ yakkety main multiverse restricted universe Repeat this process for the rest of the CDs in your set.