the pdp is running 2.11BSD ! the disk has now got a valid disklabel, i got it on the disk by setting all diskparameters without using d (display) and wrote it. after this i could use the display option. installation was no problem, but still i have some questions: my VT102 doesn´t do backspace, i only get ^H. i tried the terminal in ANSI and VT52 mode, no difference. i have some dec boards labeled M7513 does anyone know what this is? i found: M7513 - RQD - RQDXE Q BUS drive interface extension module it is a double height card and it has 3 50pin connectors. the RQDX3 has another connector, i suppose for RX50 floppydrive. can i hook up a 5,25" pc drive? maybe with modifications? --lothar