Hi list members, I have successfully installed stretch from a usb stick onto which I had downloaded the latest amd64 weekly-build DVD-1.iso and other necessary init files. Well, after the install process had finished, I rebooted from harddisk and everything worked, but when I now try to use apt to install more files FROM THE DVD.iso on the stick (not over the network), it tells me to insert the cdrom:[DEBIAN_TESTING...DVD-iso-1], even when the USB stick is already inserted in the slot - no, apt wants a cdrom (and that's what the source.list indicates: cdrom. It's an iso-hybrid as you know, but I can't find a way to tell apt to use this very same USB stick (with the named ISO) from which the installing process had been carried out. When I put different forms of identifying the USB stick into the sources.list apt says something like "there is no driver for that device installed" or "there is no release file" (when I put file://var/lib/apt/lists directory) and does not proceed. But the installer correctly used this USB stick. I can't figure out how to work around that, or what's going wrong. Do you have an idea? I read the install.txt from beginning to end, but I couldn't find any hints on this issue. Thanks in advance. Stephan
P.S. Please CC me as I'm not subscribed to the list.