Using CD-ROM mount point /cdrom/ Identifying... [60e0bd57e3804fa04225e023545ba105-2] Scanning disc for index files... Found 1 package indexes, 0 source indexes, 0 translation indexes and 0 signatures Found label 'PeachOSI-TheWorks-64bit 16.04 - Release amd64' This disc is called: 'PeachOSI-TheWorks-64bit 16.04 - Release amd64' Copying package lists... Reading Package Indexes... 0% Reading Package Indexes... 14% Reading Package Indexes... Done Writing new source list Source list entries for this disc are: deb cdrom:[PeachOSI-TheWorks-64bit 16.04 - Release amd64]/ dists/ Repeat this process for the rest of the CDs in your set. grep: /root/etc/apt/apt.conf.d/50unattended-upgrades: No such file or directory