# deb [ trusted=yes ] cdrom:[Proxmox VE 5.1]/ stretch pve

# deb [ trusted=yes ] cdrom:[Proxmox VE 5.1]/proxmox/packages/ / 

deb [ trusted=yes ] cdrom:[Proxmox VE 7.0 BETA]/ bullseye pve

deb cdrom:[Proxmox VE 7.0 BETA]/proxmox/packages/ / 

deb [ trusted=yes ] cdrom:[Debian GNU/Linux 10.6.0 _Buster_ - Official amd64 NETINST 20200926-10:16]/ buster main