Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uwm.edu!rpi!zaphod.mps.ohio-state.edu!sdd.hp.com!ucsd!ucbvax!RICHTER.MIT.EDU!krowitz From: krowitz@RICHTER.MIT.EDU (David Krowitz) Newsgroups: comp.sys.apollo Subject: Re: Dwarf Disk Drives Message-ID: <9008281332.AA03569@richter.mit.edu> Date: 28 Aug 90 13:32:37 GMT Sender: daemon@ucbvax.BERKELEY.EDU Organization: The Internet Lines: 18 If DEX is running ok, then the drive/controller/CPU combination is probably ok. (assuming you ran the WIN test on the full drive with writes enabled -- the default is read-only). If a full DEX WIN test succeeds, then run EX FBS (find bad spots), which will not only create a new bad spot list on the disk (ala INVOL option 7), but it also exercise the drive and enter the location of any bad blocks it finds in the bad spot list. If you have the manufacturer's bad block list, you can enter it by hand in addition to (or instead of) running FBS. If all this (DEX, FBS, INVOL) work ok and the self-test still fails, then I would look to an out of date boot PROM on the CPU motherboard. -- David Krowitz krowitz@richter.mit.edu (18.83.0.109) krowitz%richter.mit.edu@eddie.mit.edu krowitz%richter.mit.edu@mitvma.bitnet (in order of decreasing preference)