Creating a Boot Floppy for a Multibus SCSI Adapter

Last reviewed: June 5, 1995
Article ID: Q130930
The information in this article applies to:
  • Microsoft Windows NT Workstation version 3.5
  • Microsoft Windows NT Server version 3.5

To create an FT boot floppy to boot the mirror drive attached to the secondary channel/bus of a Multibus SCSI adapter, you must modify the Arc path in the BOOT.INI file. For scsi(x)disk(y)rdisk(z)parition(a), the variable (y) should be calculated as follows:

   y= [ (scsi bus/channel number) x (32) ] + (scsi id of the disk)

For example, the Adaptec AHA-2740T/2742T has two channels; SCSI Channel A (bus 0) and SCSI Channel B (bus 1). Each channel can accommodate a SCSI bus with up to seven devices. If the Windows NT mirror drive is located on the first partition on a SCSI disk with the target ID of 4, and is connected to SCSI Channel B (bus number 1) of an Adaptec AHA-2742T controller, the ARC name in the BOOT.INI file would be:

   scsi(0)disk(36)rdisk(0)partition(1)


KBCategory: kbusage
KBSubcategory: ntfault
Additional reference words: prodnt 3.50


THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY.

Last reviewed: June 5, 1995
© 1998 Microsoft Corporation. All rights reserved. Terms of Use.