On Tue, 13 Mar 2018 23:20:30 +0000 Brian <a...@cityscape.co.uk> wrote:
> On Tue 13 Mar 2018 at 22:11:58 +0100, Nomen Nescio wrote: > > > I downloaded some Debian v.9.2.1 DVDs and I would like > > Not today you didn't. It's 9.4.0 now. > > > to know how long they are useful. In other words, how long > > may I retain them as install DVDs and upgrade once it has > > been installed and put on-line? > > For ever and ever. > To expand a bit (you can tell that Brian's not paid by the word), the numbered versions of Debian form a single chain from the earliest days. You could literally install any numbered version and upgrade in steps to the current one, though that would be a lot of wasted work. Any version 9.x would upgrade in one step to current, and in the fullness of time (probably at least a year) can be upgraded to the next major version. The older the 9.x version to be upgraded, the more new software has to be downloaded, but that's still vastly less than downloading a new installation disc, the majority of the software won't change during the life of the 9.x release. -- Joe
