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Dedicated Area to Avoid Diskette Damage Resulting From Contamination

IP.com Disclosure Number: IPCOM000102163D
Original Publication Date: 1990-Oct-01
Included in the Prior Art Database: 2005-Mar-17
Document File: 1 page(s) / 41K

Publishing Venue

IBM

Related People

Brabec, N: AUTHOR

Abstract

Some hardware devices store their operating systems and error logs on diskette. During operation of the device, these diskettes remain in the disk drive with the shutter retracted in the presence of air flow. A technique to lessen the contamination of critical data on these diskettes is identified.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 78% of the total text.

Dedicated Area to Avoid Diskette Damage Resulting From Contamination

       Some hardware devices store their operating systems and
error logs on diskette.  During operation of the device, these
diskettes remain in the disk drive with the shutter retracted in the
presence of air flow.  A technique to lessen the contamination of
critical data on these diskettes is identified.

      As an example, the 5394 remote controller has a disk drive for
diskettes which contain the operating system as well as error logs
and other files.  These diskettes remain in the drive during
operation of the controller.

      The diskette surface is exposed and air flows through the
drive.  Surface contaminants can collect on the drive head or on the
diskette surface.  When the head touches the diskette surface, it
often imbeds these contaminants before the diskette wiper can clean
them from the spinning diskette.  These imbedded contaminants may
destroy critical data and make the diskettes unusable.  This makes
the product unusable to the customer and increases the cost to the
product for replacement diskettes.

      To lessen contamination problems, a dedicated area of the
diskette is exposed to the damage that may be caused when the head
first touches the diskette as it spins up. The microcode which
handles diskette operations always parks the head in a specific area
of the diskette where no critical data is stored.  Five tracks on
either side of this location are al...