On 19-06-17, Alan Reding wrote: > Hi, > > I downloaded the first DVD of Debian Stretch and installed the OS onto my > machine. > > After I typed > > sudo apt-get update > > The following error message appeared: > > W: The repository "cdrom://[Debian GNU/Linux 9.0.0 _Stretch_ - Official amd64 > DVD Binary-1 20170617-13:08] Stretch Release" does not have a Release file. > N: Data from such a repository can't be authenticated and is therefore > potentially dangerous to use. > N: See apt-secure(8) manpage for repository creation and user configuration > > I have been using Debian since Wheezy (7.0) and this is the first time I have > received such a warning. > > Should I inform the Debian Release team? Is it aware of the omission of the > Release file? > > Regards. > > Alan >
It is actually quite normal thing and all you need to do is to comment out/delete lines in your sources.list for cdrom.