Xref: utzoo comp.sys.m88k:248 comp.periphs.scsi:764 Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sdd.hp.com!zaphod.mps.ohio-state.edu!ncar!noao!amethyst!rsm From: rsm@math.arizona.edu (Robert S. Maier) Newsgroups: comp.sys.m88k,comp.periphs.scsi Subject: Aviion SCSI problems? Message-ID: Date: 21 Jul 90 00:32:28 GMT Followup-To: comp.sys.m88k Organization: University of Arizona Mathematics Department Lines: 29 I've got a Data General Aviion 300 on my desk, and it's got a problem. It runs DG/UX 4.10 just fine, but it refuses to boot DG/UX 4.20. The DG/UX 4.20 in question is located on a 662 megabyte third-party SCSI disk, and I suspect that that's the source of the problem. Data General did something to its SCSI interface between releases 4.10 and 4.20 of DG/UX; does anyone know exactly what? The 4.20 release notes mention only that 4.20 ``now supports synchronous SCSI transfers,'' but the changes must have been pretty substantial. The local DG field engineer tells me that on some of DG's Maxtor drives, the drive PROM actually had to be replaced. My own drive is a Micropolis, though. And by talking to Micropolis I verified that its PROM, though bearing a year-old date, is the most recent vanilla PROM available. So I'm at sea. Can anyone help? Does DG/UX 4.20 no longer talk standard SCSI out of its SCSI port? If so I'm going to think twice about keeping my Aviion. (I switched to Data General from Sun in part because I had extreme doubts about Sun's SCSI drivers...) -- Robert S. Maier | Internet: rsm@math.arizona.edu [128.196.224.2] Dept. of Math. | UUCP: ..{allegra,cmcl2,hao!noao}!arizona!amethyst!rsm Univ. of Arizona | Bitnet: maier@arizrvax Tucson, AZ 85721 | FAX: +1 602 621 8322 U.S.A. | Voice(POTS): +1 602 621 6893 / +1 602 621 2617