"Add repositories from a CD or DVD
If you need an offline repository for packages, you can download all the ISO images for your distribution, eventually burn them on CDs/DVDs and add them manually to the /etc/apt/sources.list file using apt-cdrom (as root):
apt-cdrom add
"Enter the CD/DVD in the drive and let APT scan for packages.
"Another great solution is to not even burn the ISO images to CD, just mount them and add them to your sources.list this way. Here's what you have to do:
First, type:
apt-cdrom -d=/cdrom add
"Or replace /cdrom with some empty directory of your choice"
