Hi John, >> Or must I install Jessie and then change from there to Stretch?? > > That is almost always the best way to install Testing, unless your > intent is to help debug the installer.
Ok I ended up doing it like that! (first install a minimal stable [Jessie], then dist-upgrade to testing [Stretch]) Refnotes ~~~~~~ I loaded the Jessie CD image to a usb stick (dmesg showed me that it's /dev/sdb) ## umount usb, then: cp jessie.img /dev/sdb && sync And installed Jessie (without GUI-Desktop Environment). Then changed /etc/apt/sources.list to use Stretch. Stretch on USB ~~~~~~~~~~~~ Since I already had the Stretch DVD1 on a USB, I got apt to use that (instead of the usual way of using a web-repo). I did that as follows: I inserted the USB with the DVD-image and dmesg showed me that it's /dev/sdb Then I did: mkdir /mnt/dvd1 mount -t iso9660 -o loop /dev/sdb /mnt/dvd1/ ## then I commented everything in /etc/apt/sources.list apt-cdrom --no-auto-detect -m -d=/mnt/dvd1 add # this put a line into /etc/apt/sources.list Then: mount -t iso9660 -o loop /dev/sdb /media/cdrom # needed for: apt-get update apt-get update apt-get dist-upgrade apt-get autoremove Then tasksel Worked nicely! Regards