Browse Prior Art Database

Method to Embed Special Cylinder

IP.com Disclosure Number: IPCOM000118908D
Original Publication Date: 1997-Sep-01
Included in the Prior Art Database: 2005-Apr-01
Document File: 2 page(s) / 20K

Publishing Venue

IBM

Related People

Andoh, H: AUTHOR

Abstract

Disclosed is a method to embed a special-usage cylinder anywhere without any change of LBA -> physical Cylinder/Head/Sector calculation routine by a control flag and special cylinder table.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 100% of the total text.

Method to Embed Special Cylinder

      Disclosed is a method to embed a special-usage cylinder
anywhere without any change of LBA -> physical Cylinder/Head/Sector
calculation routine by a control flag and special cylinder table.

      The control flag is cleared when operation is normal;
therefore, special cylinders in the table are skipped.  To access
special cylinders, set the control flag and get the special cylinder
ID by a special cylinder number.

      This method can be applied to insert any special usage-cylinder
(spare cylinder, microcode cylinder, etc.) anywhere.