With the first DVD of Debian 9.8.0 I did: dd if=/dev/cdrom of=dvd.iso bs=4M I edited sources.list to read deb file:///home/richard/dvd.iso stretch main contrib trusted=yes
When running Synaptic's Edit->Reload Package Information I receive an error message:
The repository 'file:/home/richard/dvd.iso stretch Release' does not have a Release file.
What is the problem? TIA