# mkdir path
cd /media
mkdir bd1
mkdir bd2
mkdir bd3
mkdir bd4
# mount iso
mount /dev/sr0 /media/bd1
mount /dev/sr1 /media/bd2
mount /dev/sr2 /media/bd3
mount /dev/sr3 /media/bd4
# boot mount
echo "/dev/sr0 /media/bd1 iso9660 defaults 0 0" >> /etc/fstab
echo "/dev/sr1 /media/bd2 iso9660 defaults 0 0" >> /etc/fstab
echo "/dev/sr2 /media/bd3 iso9660 defaults 0 0" >> /etc/fstab
echo "/dev/sr3 /media/bd4 iso9660 defaults 0 0" >> /etc/fstab
mv /etc/apt/sources.list /etc/apt/sources.listbak
echo "deb [trusted=yes] file:///media/bd1 buster main contrib" > /etc/apt/sources.list
echo "deb [trusted=yes] file:///media/bd2 buster main contrib" >> /etc/apt/sources.list
echo "deb [trusted=yes] file:///media/bd3 buster main contrib" >> /etc/apt/sources.list
echo "deb [trusted=yes] file:///media/bd4 buster main contrib" >> /etc/apt/sources.list
