Browse Prior Art Database

Method for Write-Protecting a Program Disk

IP.com Disclosure Number: IPCOM000057044D
Original Publication Date: 1988-Mar-01
Included in the Prior Art Database: 2005-Feb-14

Publishing Venue

IBM

Related People

Authors:
Bertram, RL Hayes, DE Lederer, JF Perkins, DB Spears, HD [+details]

Abstract

Accidental formatting and/or erasure of a system disk to which it is necessary to be able to write selectively is prevented even though a write-protect tab cannot be employed to prevent writing to or erasure of the program disk. The disk has a machine-readable name and the computer uses a routine to verify that the inserted disk is not the program disk unless it is the one to which information is to be written. In some systems, it is necessary to occasionally save data on a program disk. For example, when a user changes the configuration of a system, such as the type of printer, for example, or changes a word processor document format default, such as page size, for example, this data must be saved on the program disk.