Cheers, that worked. Sampsa On 4 Mar 2011, at 22:36, hvlems at zonnet.nl wrote: B/R5:1 ddun Will get you to SYSBOOT, assuming you're not running the simh VAX 11/780 ;-) Verzonden vanaf mijn draadloze BlackBerry -toestel -----Original Message----- From: Sampsa Laine <sampsa at mac.com> Sender: owner-hecnet at Update.UU.SE Date: Fri, 04 Mar 2011 22:23:00 To: <hecnet at Update.UU.SE> Reply-To: hecnet at Update.UU.SESubject: [HECnet] Boot flags on SIMH MicroVAX 3900 Guys, Anybody got a quick answer for how to do a conversational boot on SIMH VAX? I've managed to get the disk filled up on GORVAX and need to get in to clean up the disk. Sampsa