Creating a Boot Floppy for a Multibus SCSI Adapter (130930)


The information in this article applies to:

  • Microsoft Windows NT Workstation 3.5
  • Microsoft Windows NT Server 3.5
This article was previously published under Q130930
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)

Modification Type:MajorLast Reviewed:10/30/2003
Keywords:KB130930
©2003 Microsoft Corporation. All rights reserved.