> I would think that all I need to do is configure
> the remaining
> good drive at SCSI address 0 and boot, but when I do that, the system
> never even gets as far as finding the loader.

If you're using software (OS) mirroring, i.e. the NT4-and-earlier "mirrored
set" stuff or Win2K mirrored volumes, you bring up the system on your
"Windows NT Fault Tolerance (FT) boot floppy disk" and rebuild the mirror;
the following articles may be of interest:
 http://support.microsoft.com/support/kb/articles/Q113/9/77.asp - Booting
From Mirror After Primary Partition Is Lost
 http://support.microsoft.com/support/kb/articles/Q120/2/27.asp - Steps to
Recover a Failed Mirrored System/Boot Partition
 http://support.microsoft.com/support/kb/articles/Q167/0/45.asp - Reasons
Why Windows NT Does Not Boot From a Shadow Mirror Drive

IMPORTANT: if you didn't update your ERD after you created the mirror
set/volume, DO NOT use the "Repair" option of NT/2K setup. Doing so will
overwrite the disk-information section of the registry--the one on the hard
drive!--with the copy from the ERD, which did not show the mirrored state.
Doing so will put you in a situation where, in the immortal words of the
Bard, "Foresooth; thou art well and truly hosed."

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