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- Newsgroups: comp.unix.bsd
- Path: sparky!uunet!math.fu-berlin.de!fub!einoed!bitcave!jdb
- From: jdb@bitcave.in-berlin.de (Joern D. Busch)
- Subject: Re: wd1 bad144 woes & workaround (& another idea)
- Message-ID: <1992Aug13.001403.10404@bitcave.in-berlin.de>
- Organization: BitCave BBS, Berlin, FRG
- References: <16auimINNal@disaster.Germany.EU.net>
- Date: Thu, 13 Aug 1992 00:14:03 GMT
- Lines: 43
-
- bs@Germany.EU.net (Bernard Steiner) writes:
-
- >swapon: wd1b: device not configured and mount complained in a very similar
- >fashion.
-
- I'm not really sure about the necessity of this, but does your config
- file include something like:
- config "386bsd" root on wd0 swap on wd0 and wd1
-
- About bad144 in general, a few days ago I asked here about it, at that
- point missing the dd trick. The very first mail I received mentioned
- that trick, so after low-level formatting the drive, letting the con-
- troller mark the bad sectors, installing an appropriate disklabel and
- initialising bad144 wd0 0, I dd-searched all bad sectors and marked
- them with bad144 -a, and in fact all the right hd/cyl combinations
- (not 100% sure about the sects) got marked (as reported by bad144 wd0),
- but -- it still wrote to these sectors.
-
- By then I received a few more mails, mostly telling me that bad144 is
- broken and I should use the controller's alternate sector option. I'm
- doing that now, and it works just fine.
-
- But -- another person (sorry, forgot the name, but thanks!) phoned me
- and told me he got bad144 working by _not_ letting the controller mark
- the bad tracks. This way the dd trick doesn't work, but you can just
- mark all sectors of a known to be bad hd/cyl combination as bad. You
- loose quite some disk space, especially if you not have a MFM (17sec)
- drive, but if you're controller doesn't do alternate sectors I guess
- it's the only way to go.
-
- So it might be interesting but enerving to try the following: low-level
- format, controller-mark bad sectors, dd-find bad sectors, bad144-mark
- them while writing them down, low-level format again, _not_ let the
- controller mark the bad sectors, bad144 the previously noted sectors.
-
- After a precious weekend of reinstalling I'm a bit tired of this, so if
- anybody tries this please let me and/or this newsgroup know.
-
- cheers,
- Joern.
- --
- Joern D. Busch, Postfach 210401, 1000 Berlin 21, FRG, (+49 30) 3931111
- jdb@bitcave.in-berlin.de ..!mcsun!unido!fub!einoed!bitcave!jdb ..which reality?
-