Debian Archive

Old versions of Debian, like 7/Wheezy, 8/Jessie, 9/Stretch and 10/Buster, can be updated and upgraded using "Debian Archive". The server "archive.debian.org" must be used in /etc/apt/sources.list.

Credits: How to upgrade Debian 7 (wheezy) to 10 (buster) safely

7/Wheezy

deb http://archive.debian.org/debian/ wheezy main
deb-src http://archive.debian.org/debian/ wheezy main

deb http://archive.debian.org/debian-security wheezy/updates main

deb http://archive.debian.org/ wheezy/updates main
deb-src http://archive.debian.org/ wheezy/updates main

# wheezy-updates, previously known as 'volatile'
deb http://archive.debian.org/debian/ wheezy-updates main
deb-src http://archive.debian.org/debian/ wheezy-updates main

8/Jessie

deb http://archive.debian.org/debian/ jessie main
deb-src http://archive.debian.org/debian/ jessie main

deb http://archive.debian.org/debian-security jessie/updates main

deb http://archive.debian.org/ jessie/updates main
deb-src http://archive.debian.org/ jessie/updates main

# jessie-updates, previously known as 'volatile'
deb http://archive.debian.org/debian/ jessie-updates main
deb-src http://archive.debian.org/debian/ jessie-updates main

9/Stretch

deb http://archive.debian.org/debian/ stretch main
deb-src http://archive.debian.org/debian/ stretch main

deb http://archive.debian.org/debian-security stretch/updates main

deb http://archive.debian.org/ stretch/updates main
deb-src http://archive.debian.org/ stretch/updates main

# stretch-updates, previously known as 'volatile'
deb http://archive.debian.org/debian/ stretch-updates main
deb-src http://archive.debian.org/debian/ stretch-updates main

10/buster

deb http://archive.debian.org/debian/ buster main
deb-src http://archive.debian.org/debian/ buster main

deb http://archive.debian.org/debian-security buster/updates main

deb http://archive.debian.org/ buster/updates main
deb-src http://archive.debian.org/ buster/updates main

# buster-updates, previously known as 'volatile'
deb http://archive.debian.org/debian/ buster-updates main
deb-src http://archive.debian.org/debian/ buster-updates main