Hi.
        AA55 is a signature to be placed at the end of the first sector of
the partitions or MBR, I think. So use an hex disk editor to review the
first sector of your NT partition, booting from a DOS floppy. If you
find 7900 at the end, you know this is the problem, so change it with care.
(Not sure of byte order).

>
> Hi all,
>
> Problem: Am trying to load Windows NT workstation 4, and get a dual boot
> machine. I have configured the partitions as FAT 16, and each is 1Gb in
> size.
>
> After installing Workstation 4 I get the following message:
> "OS LOADER V4.0 Boot record signature AA55 not found (7900 Found)
> Windows NT could not start because of a computer disk hardware
> configuration problem. Could not read from selected boot disk, check boot
> path and disk hardware".
>
>
> jason parker
>
************************************
Javier Vizcaino. Ability Electronics. [log in to unmask]
  Starting point:        (-1)^(-1) = -1
  Applying logarithms: (-1)*ln(-1) = ln(-1)
  Since ln(-1) <> 0, dividing:  -1 = 1     (ln(-1) is complex, but exists)