公开(公告)号：GB2336921B

公开(公告)日：2002-07-10

申请号：GB9821445

申请日：1998-10-05

Applicant: IBM

Inventor： CHESTON RICHARD W ,  HOGGARTH ROGER PHILIP ,  KNOX RICHARD IAN ,  LOCKER HOWARD J ,  RHOADES DAVID BENSON

IPC: G06F11/14

Abstract: A method, system and computer program product in which half of the storage space on a non-volatile storage device is used to maintain a copy of the last "known-good" copy of the operating system and on invocation by a user, restoring from this backup copy when, for example, the operating system has become corrupted due to changes made to settings or device drivers.

公开(公告)号：GB2336921A

公开(公告)日：1999-11-03

申请号：GB9821445

申请日：1998-10-05

Applicant: IBM

Inventor： CHESTON RICHARD W ,  HOGGARTH ROGER PHILIP ,  KNOX RICHARD IAN ,  LOCKER HOWARD J ,  RHOADES DAVID BENSON

IPC: G06F11/14

Abstract: Recovery from corruption of data stored on a computer non-volatile storage device, in particular when the operating system has become corrupted due to changes made to settings or device drivers, and the computer is incapable of booting up. The computer non-volatile memory is partitioned into at least two partitions, which may occupy the same hard disk or different disks. The first partition stores the data, a "last known good" copy of which is backed up to the second partition, for example immediately after the system is first installed or immediately after a successful bootup. The backup application program copies the data sector by sector, fig. 3. The POST/BIOS code held in ROM provides a restoration function which, when invoked via a special user key input combination, copies each sector of the second partition back to the corresponding sector of the first partition, fig. 4. Thus the computer is able to boot from this "known good" configuration.

公开(公告)号：CA2018073C

公开(公告)日：1996-01-02

申请号：CA2018073

申请日：1990-06-01

Applicant: IBM

Inventor： DIXON JERRY D ,  KEENER DON S ,  LOCKER HOWARD J ,  MARAZAS GERALD A ,  MCNEILL ANDREW B ,  NEWSOM THOMAS H ,  OSBORN NEAL A

IPC: G06F13/14 ,  G06F12/06 ,  G06F13/362

Abstract: Apparatus for assigning addresses to devices connected to an SCSI bus. A second configure bus interconnects address assignable devices on the SCSI bus. The assignable devices may be used in a mixed system where some devices have fixed non-assignable addresses. The master device in the SCSI bus transmits configuration commands over the configuration bus and addresses for assignment over the SCSI bus. Acknowledgements are received back from a device which has accepted an address. Once configured with an address, the device propagates subsequent configuration commands to an adjacent device.

公开(公告)号：BR9002877A

公开(公告)日：1991-08-20

申请号：BR9002877

申请日：1990-06-18

Applicant: IBM

Inventor： DIXON JERRY D ,  KEENER DON S ,  LOCKER HOWARD J ,  MARAZAS GERALD A ,  MCNEILL ANDREW B ,  NEWSOM THOMAS H ,  OSBORN NEAL A

IPC: G06F13/14 ,  G06F12/06 ,  G06F12/00

Abstract: Apparatus for assigning addresses to devices connected to an SCSI bus (10). A second configure bus (15) interconnects address assignable devices on the SCSI bus. The assignable devices may be used in a mixed system where some devices have fixed non-assignable addresses. The master device in the SCSI bus transmits configuration commands over the configuration bus and addresses for assignment over the SCSI bus. Acknowledgements are received back from a device which has accepted an address. Once configured with an address, the device propagates subsequent configuration commands to an adjacent device.

公开(公告)号：CA2018073A1

公开(公告)日：1990-12-19

申请号：CA2018073

申请日：1990-06-01

Applicant: IBM

Inventor： DIXON JERRY D ,  KEENER DON S ,  LOCKER HOWARD J ,  MARAZAS GERALD A ,  MCNEILL ANDREW B ,  NEWSOM THOMAS H ,  OSBORN NEAL A

IPC: G06F13/14 ,  G06F12/06

Abstract: Apparatus for assigning addresses to devices connected to an SCSI bus (10). A second configure bus (15) interconnects address assignable devices on the SCSI bus. The assignable devices may be used in a mixed system where some devices have fixed non-assignable addresses. The master device in the SCSI bus transmits configuration commands over the configuration bus and addresses for assignment over the SCSI bus. Acknowledgements are received back from a device which has accepted an address. Once configured with an address, the device propagates subsequent configuration commands to an adjacent device.