Generating locales... en_US.UTF-8... done Generation complete. pwconv: failed to change the mode of /etc/passwd- to 0600 Using CD-ROM mount point /cdrom/ Identifying... [531e6b0b3407a1311f0ddca091ed23ea-2] Scanning disc for index files... Found 12 package indexes, 0 source indexes, 1 translation indexes and 4 signatures Found label 'Ubuntu 14.04.4 LTS _Trusty Tahr_ - Release amd64 (20160217.1)' This disc is called: 'Ubuntu 14.04.4 LTS _Trusty Tahr_ - Release amd64 (20160217.1)' Copying package lists...gpgv: Signature made Wed Feb 18 20:11:08 2015 UTC using DSA key ID FBB75451 gpgv: Good signature from "Ubuntu CD Image Automatic Signing Key " gpgv: Signature made Tue Feb 4 11:52:19 2014 UTC using DSA key ID FBB75451 gpgv: Good signature from "Ubuntu CD Image Automatic Signing Key " gpgv: Signature made Wed Apr 20 22:29:18 2016 UTC using DSA key ID FBB75451 gpgv: Good signature from "Ubuntu CD Image Automatic Signing Key " gpgv: Signature made Wed Feb 17 23:40:23 2016 UTC using DSA key ID FBB75451 gpgv: Good signature from "Ubuntu CD Image Automatic Signing Key " Reading Package Indexes... 0% Reading Package Indexes... 1% Reading Package Indexes... Done Reading Translation Indexes... 0% Reading Translation Indexes... Done Writing new source list Source list entries for this disc are: deb cdrom:[Ubuntu 14.04.4 LTS _Trusty Tahr_ - Release amd64 (20160217.1)]/ .Trashes/501/dists/precise/restricted/binary-amd64/ deb cdrom:[Ubuntu 14.04.4 LTS _Trusty Tahr_ - Release amd64 (20160217.1)]/ .Trashes/501/dists/trusty/main/binary-amd64/ deb cdrom:[Ubuntu 14.04.4 LTS _Trusty Tahr_ - Release amd64 (20160217.1)]/ trusty main restricted deb cdrom:[Ubuntu 14.04.4 LTS _Trusty Tahr_ - Release amd64 (20160217.1)]/.Trashes/501/ jessie main deb cdrom:[Ubuntu 14.04.4 LTS _Trusty Tahr_ - Release amd64 (20160217.1)]/.Trashes/501/ kali-rolling contrib main non-free deb cdrom:[Ubuntu 14.04.4 LTS _Trusty Tahr_ - Release amd64 (20160217.1)]/.Trashes/501/ precise main deb cdrom:[Ubuntu 14.04.4 LTS _Trusty Tahr_ - Release amd64 (20160217.1)]/.Trashes/501/ trusty restricted deb cdrom:[Ubuntu 14.04.4 LTS _Trusty Tahr_ - Release amd64 (20160217.1)]/.Trashes/501/ xenial main restricted Repeat this process for the rest of the CDs in your set. W: A lot of entries were discarded, something may be wrong.