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From: liberte@uiucdcsb.UUCP
Newsgroups: comp.sys.mac
Subject: Re: 512K Mac/800K Drive
Message-ID: <164500009@uiucdcsb>
Date: Thu, 11-Dec-86 23:36:00 EST
Article-I.D.: uiucdcsb.164500009
Posted: Thu Dec 11 23:36:00 1986
Date-Received: Mon, 15-Dec-86 06:51:46 EST
References: <127200001@inmet>
Lines: 21
Nf-ID: #R:inmet:127200001:uiucdcsb:164500009:000:840
Nf-From: uiucdcsb.cs.uiuc.edu!liberte    Dec 11 22:36:00 1986


I was daring enough to try using some of my single sided disks as
double sided disks.  Some could not initialize, but others that
did initialize (as double sided) sometimes failed later on.  Failures
in the directory blocks are bad news.

So I thought, still trying to be cheap, what we need is a utility
to initialize and test disks AND allocate bad blocks so they will not
be used again.  You would notate on your disk label that there are
bad blocks so that you would not simply reinitialize it.

But now the difference in price between single and double sided disks
is only about 20 or 30 cents.  Still, it would be a useful utility
even for fully certified double sided disks since blocks do go bad, and
who wants to bother with those lifetime guarentees.


Dan LaLiberte
liberte@b.cs.uiuc.edu
liberte@uiuc.csnet
ihnp4!uiucdcs!liberte