Hi again, after removing all other cards from my 11/23+ my serial console seems to work error-free. Now I can bootstrap the copy utility which comes with vtserver. I can also copy something onto a formatted diskette. When I copy from diskette to the virtual tape, the copying seems to ignore the disk's end... is that correct? I simply tried to copy the copy binary itself to an rx02 and boot that. Did not work. I verified the disk contents i put on it - they're ok.... I also have tried the 2.11BSD stub which came with vtserver (boot.dd, disklabel etc). Boot.dd gave me only A LOT of: Continues several screens and then the cpu hangs (still running) after outputting What have I done wrong? Where can I get more information about different boot roms, bootstrapping the 11/23+ and my RX02 drive (nothing on bitsavers...!?!)? What does the (which one?) boot prom put where and where does it start execution etc.? There must be cool docs which I don't know yet.... Regards, Philipp :-)