Mengadd Repository Linux dari CD Rom

root@samuderapase:~# apt-cdrom add
Using CD-ROM mount point /media/cdrom/
Identifying.. [47df40d35fab27fd6015021327fc21dc-2]
Scanning disc for index files..
Found 0 package indexes, 0 source indexes, 0 translation indexes and 0 signatures
W: Failed to mount '/dev/sr0' to '/media/cdrom/'
E: Unable to locate any package files, perhaps this is not a Debian Disc or the wrong architecture?

root@samuderapase:~# mount -r /dev/sr0 /media/cdrom
root@samuderapase:~# apt-add cdrom
bash: apt-add: command not found
root@samuderapase:~# apt-cdrom add
Using CD-ROM mount point /media/cdrom0/
Identifying.. [df536a6852f677c02419bfc6e297b484-2]
Scanning disc for index files..
Found 2 package indexes, 0 source indexes, 0 translation indexes and 0 signature