Path: utzoo!attcan!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!glenn
From: glenn@cs.utexas.edu (Gwangwu Lai)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Index hole on diskettes
Message-ID: <111@victoria.cs.utexas.edu>
Date: 26 May 90 14:01:36 GMT
Organization: U. Texas CS Dept., Austin, Texas
Lines: 19


Eric Sheppard wrote: 

| Now who's in left field, here?  He said that if it determined the start of a
| sector, there would be many such holes around the center.  I told him that's
| what they USED to do, until they developed soft sectoring.

Bill Davidsen replied:

*  That's correct, a hard sector disk has multiple holes. As I recall it
*also has an index hole, but I haven't worked with hard sector in...
*maybe ten years.

As I recall it, a hard-sectored disk had an index hole and multiple sector
holes.  The sector holes were evenly spaced around the hub, while the index
hole was located approximately half way between two sector holes.


Glenn