Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!rutgers!ucsd!ucsdhub!loral!art
From: art@loral.UUCP (Earthman Arthur Donavan)
Newsgroups: comp.sys.mac.hardware
Subject: Re: Drilling holes in DS/DD -> DS/HD
Message-ID: <2427@loral.UUCP>
Date: 15 Dec 89 03:17:00 GMT
References: <16918215MES@MSU> <89347.194237CXT105@PSUVM.BITNET>
Reply-To: art@loral.UUCP (Earthman Arthur Donavan)
Distribution: usa
Organization: Loral Instrumentation, San Diego
Lines: 20

For what it is worth;

I have read a magazine article concerning holes in disks to make them HD
disks.  The standard media has a magnetic coating of about 600 oersteds,
and the HD media has a 700 oersted coating.

Maybe there is some magnetic engineer out there in netland that can shed
some light on the difference, and if the difference is great enough to
worry about lost data. (Bits changing states, etc.)


			
			Sincerely;

			Arthur Donavan



These comments are my own opinions, and in no way reflect opinions or policies
held by Loral Instrumentation, or Loral Corporation, and/or its subsidiaries.