ewm@punjab.udev.cdc.com (Eric Markwardt) (12/13/89)
I'm trying to stick some Wren V's (94181-702) on our 2030s we just got in. We've been having trouble getting the defect list read off the disk and think this may be resulting in some of the read and/or write errors we've been getting on the disks. When I boot /stand/format and try to read the defect list from the disk, I get nothing but ioctl error messages. Similarily, scanning the disk for defects results in more ioctl errors on every block. TFM hasn't been exactly helpful in what all of the parameters are when format is asking you what type of disk you have, since the Wren V-702 isn't in the "known disk" list -- a side note here.. does anyone know where format pulls the "known disk" list from? I made some changes in /etc/disktab and they didn't seem to show up the next time I booted format. Are these hard-coded into format?? Anyway, has anyone put a 702MB Wren V on a 2030 and had it work successfully? If so, what did you use for disk parameters, enabling of sector slipping, track slipping, reading disk defects, etc.? BTW - the word from Mips support is that the 94181-702 is "not officially supported". Seems to me that if other Wrens are supported, the Wren V shouldn't be much different.. Thanks in advance for any insite anyone can shed. -Eric -- Eric Markwardt ewm@punjab.udev.cdc.com Disclaimer: All opinions/thoughts above are my own and in no way represent those of my employer or fellow employees.
roe@sobmips.UUCP (r.peterson) (12/14/89)
From article <14783@shamash.cdc.com>, by ewm@punjab.udev.cdc.com (Eric Markwardt): > I'm trying to stick some Wren V's (94181-702) on our 2030s we > just got in. We've been having trouble getting the defect list > read off the disk and think this may be resulting in some of the > read and/or write errors we've been getting on the disks. Lie to the standalone format program. Tell it you have a 94191-766 disk, and override the disk geometry. It seems that, after doing so, the format program properly locates the bad sector info by itself. -- One makes strong assumptions delving Roe Peterson into the beginning of the universe... {uunet,mcgill-vision}!sobeco!roe - Stephen Hawking, Cambridge
rr@pika.mips.com (Robert "Bob" Rodriguez) (12/15/89)
Be careful, /stand/format has bugs(!). If you do: $ what /stand/format /stand/format: Mips Computer Systems Version 4.30 Mon Jul 24 15:42:26 PDT 1989 root Mips Computer Systems Version 4.30 MIPS OPT Mon Jul 24 15:39:17 PDT 1989 root then you have a buggy version. Your local mips office can get you a version that is labeled $ what /stand/format /stand/format: Mips Computer Systems Version 4.31 Tue Sep 26 21:07:03 PDT 1989 hal Mips Computer Systems Version 4.31 MIPS OPT Thu Sep 28 17:22:50 PDT 1989 hal Robert Rodriguez +------+ _____ ___ -- @ rr@mips.com | /// | |\ /| | | | |__` One of the Fathers |/// | | \/ | | |--' \ of PMAX |//____| | | __|__ | \__/