adel@adel:~$ sudo apt-cdrom add
[sudo] password for adel:
Using CD-ROM mount point /media/apt/
Identifying.. [d401cc8f0ad5b9425131424a8fbdef6f-2]
Scanning disc for index files..
Found 0 package indexes, 0 source indexes, 0 translation indexes and 0 signatures
Using CD-ROM mount point /media/APTonCD/
Identifying.. [df52d97f876889759c09e3cf8b09b5f4-2]
Scanning disc for index files..
Found 1 package indexes, 0 source indexes, 0 translation indexes and 0 signatures
Found label 'APTonCD for ubuntu precise - i386 (2012-05-15 23:26) DVD1'
This disc is called:
'APTonCD for ubuntu precise - i386 (2012-05-15 23:26) DVD1'
Copying package lists...E: Unable to locate any package files, perhaps this is not a Debian Disc or the wrong architecture?