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From: tempest@ecst.csuchico.edu (Kenneth K.F. Lui)
Newsgroups: comp.sys.next
Subject: Re: ED Floppy MTTF ?
Message-ID: <1991Jun12.030905.18683@ecst.csuchico.edu>
Date: 12 Jun 91 03:09:05 GMT
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[Ward Travis writes about an ED diskette not working anymore
(cannot initialize).  This was after a NeXTstation initialized it
fine and a PS/2 with a 1.44MB drive initialized it.]

My guess is because the diskette was re-initialized by the PS/2.
You never say whether the diskette failed to initialize after the
PS/2 formatted it or not.  Remember ED disks use different
magnetic formulation and in order to store more info, you need
less signal so adjacent bits don't interfer with one another--so
if you format with the "HD" setting from a PS/2, the signals used
for that format will be greater than those used to format in the
"ED" setting.  You ain't never gonna overcome the stronger signal
no matter how many times you format using an "ED" disk drive.
Try using a bulk eraser as a last resort.

Ken
______________________________________________________________________________
tempest@ecst.csuchico.edu, tempest@walleye.ecst.csuchico.edu,|Kenneth K.F. Lui|
tempest@sutro.sfsu.edu, tempest@wet.UUCP                     |________________|