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From: ted@helios.ucsc.edu (Ted Cantrall)
Newsgroups: comp.sys.ibm.pc
Subject: Re: What are bad diskettes?
Message-ID: <10880@saturn.ucsc.edu>
Date: 27 Feb 90 16:02:05 GMT
References: <490@umrisca.usenet.umr.edu>
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Reply-To: ted@helios.ucsc.edu (Ted Cantrall)
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Organization: UCO/Lick Observatory, Santa Cruz
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In article <490@umrisca.usenet.umr.edu> jamesh@cs.umr.edu (James Hartley) writes:
>QUESTION:  When this had happened to me before, I tried reformatting again.
>With the MEI disk mentioned above, no errors were reported after the second
>format.  I first discovered this a couple of years ago with three bad
>Scotch branded 5.25" diskettes which reported fewer and fewer bad sectors
>upon each subsequent format.  Can anyone explain to me what is happening?
>
I can't explain for sure... I use to have great success in first BULK 
erasing all my floppies. It seems that a strongly imprinted magnetic
field can be hard for a Floppy disk head to completely over-write the
first time, but the bulk erase trick cleans it up nicely.	-ted-
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