Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!uakari.primate.wisc.edu!aplcen!wb3ffv!ka3ovk!tcsc3b2!pag From: pag@tcsc3b2.tcsc.com (Philip A. Gross) Newsgroups: comp.sys.att,u3b.tech Subject: Re: 3B2 Hard Drives Keywords: idtools CDC Help! Message-ID: <1990Nov27.175200.1531@tcsc3b2.tcsc.com> Date: 27 Nov 90 17:52:00 GMT References: <4346@sactoh0.SAC.CA.US> Organization: The Computer Solution Company, Inc. Lines: 48 flynn@clotho.acm.rpi.edu (Kevin Lincoln Flynn) writes: >We have a problem. We've a 3B2/400 with two 72MB drives (CDC Wrens, unless I >misremember), and we cannot format the disks with idtools. We say 'formhard' >and enter the defect table, and then spits 'cannot read physical info' at us >and quits. Help! We need this machine.... any information anyone has would >be greatly appreciated. Schemes which rely on running DOS boxes, 3B2/300s, >/400s or a 3B15 can be implemented. The first thing to check out here is to make sure that the drives are addressed properly and that the resistor pack is properly installed. The resistor pack must be installed on the LAST drive in the chain. You will find a socket at the rear of each drive that can accomodate the resistor pack. Next to the socket is a set of Burge (sp?) jumpers. As I recall, the jumper farthest from the resistor pack will address the drive as 0. Typically, the first drive in the chain is drive 0 and the second/last is addressed as drive 1. Next, when using idtools, I would suggest that you first select the option for entering the defect map of the drive(s) only. Then, if this succeeds, proceed to the formhard option. The formhard option should then present the defect map information that you previously entered. It is also important to make sure that you describe the drive properly. The description of a CDC Wren II is as follows: Drive ID: 5 512 bytes/sector 18 sectors/track 9 tracks/cylinder 925 cylinders 923 user accessible cylinders Hope this is of some assistance. =============================================================================== Philip A. Gross The Computer Solution Co., Inc. Voice: 804-794-3491 ------------------------------------------------------------------------------- INTERNET: pag@tcsc3b2.tcsc.com USENET: ...!tcsc3b2!pag UUCP: tcsc3b2!pag (804)794-1514 ATTMAIL: attmail!tcsc3b2!pag ------------------------------------------------------------------------------- The opinions expressed here are strictly mine and nobody elses. << I haven't heard what I have to say about that yet. >> :-) -- =============================================================================== Philip A. Gross The Computer Solution Co., Inc. Voice: 804-794-3491 ------------------------------------------------------------------------------- INTERNET: pag@tcsc3b2.tcsc.com