So when we see the error in Ubuntu / Debian, basically the installer is looking for the cd as its first source of binaries:
Do you want to continue [Y/n]?
Media Change: Please insert the disc labelled
‘Debian GNU/Linux 5.0.4 _Lenny_ – Official i386 DVD Binary-1 20100131-19:16’
in the drive /cdrom/ and press enter
^C
We need to edit the /etc/apt/sources.list and comment out the line beginning with “deb cdrom …”
Using vi:
linux:~# vi /etc/apt/sources.list
Press i to insert a “#” char at the beginning of the line, then ESC, and “:wq” <RETURN> to write the file. Et voila 🙂
#############################################################
################### OFFICIAL DEBIAN CDROM ###################
#############################################################
#deb cdrom:[Debian GNU/Linux 5.0.4 _Lenny_ – Official i386 DVD Binary-1 20100131-19:16]/ lenny contrib main
#############################################################
################### OFFICIAL DEBIAN REPOS ###################
#############################################################
###### Debian Main Repos
deb http://ftp.uk.debian.org/debian/ lenny main contrib non-free