Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!watmath!clyde!cbatt!ihnp4!inuxc!pur-ee!uiucdcs!uiucdcsb!liberte 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