I need to answer your other questions: 1. does the installation DVD boot properly at every time? : (It's on USB) Yes, it did boot every time I tried (I now have the BIOS set to hard disk first - do you want me to retry it?) 2. What about the rescue system on DVD? Is it only the installed system that hangs? : Not sure I understand - I have only one OS installed; this is on a SSD with 2 partitions, /dev/sda1 for the OS (no further partitioning) and /dev/sda2 for swap. I have not tried to boot into the rescue on the USB - do you want me to try? Thanks again for the follow up.