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Method of Error Selection Among Asynchronous MULTIPLE Minidisk I/O Errors

IP.com Disclosure Number: IPCOM000038937D
Original Publication Date: 1987-Mar-01
Included in the Prior Art Database: 2005-Feb-01

Publishing Venue

IBM

Related People

Authors:
Chiang, DL Krishnamurty, R [+details]

Abstract

A method is described to prevent a non-word aligned buffer I/O operation of an IBM PC program from receiving MULTIPLE errors back if the single fixed disk I/O had been broken into MULTIPLE minidisk I/O's internally. Only ONE error should be reported. An IBM PC application program which performed a SINGLE fixed disk I/O received MULTIPLE errors from the systems minidisk hardware, if the I/O had been broken into MULTIPLE minidisk I/O for any reason, such as, for non-word aligned buffer data transferred to a fixed disk, using a device driver that requires word aligned buffer transfers. In accordance with the new method the system establishes an internal data management to handle the error-reporting process for a PC-fixed disk I/O whose buffer can be either non-word aligned or word-aligned.