User Guide

2-2
Adaptec 7800 Family Manager
Installing the Driver When Installing Windows NT
A version of the aic78xx.sys driver(Ultra SCSI) driver is embedded
(included) in the Windows NT 3.5x and 4.0 installation disks (or CD-
ROM). During a normal Windows NT installation, the 7800 Family
host adapter is detected in your system and the embedded driver is
automatically installed.
Note:
If you are booting from a 7800 Family host adapter
and you are unable to install the embedded
aic78xx.sys
driver by performing a Windows NT installation, follow the
instructions for completing a fresh Windows NT installation.
The
aic78u2.sys driver (Ultra2 SCSI) is not embedded on the
Windows NT 3.5x and 4.0 installation disks (or CD-ROM) and must
be installed after Windows NT has been installed. When completing
the Windows NT installation, you can update the driver by
following the instructions in Installing the Driver When Windows NT
is Already Installed on page 2-5.
Completing a Fresh Windows NT 3.5x Installation
1
If you choose to install Windows NT from a floppy drive,
locate the Windows NT Setup Disk 1 for Floppy Installation.
If you are installing from a CD-ROM drive, locate the
Windows NT Setup Disk 1 for CD-ROM Installation.
2
Insert the diskette into drive A (not drive B) and turn
ON
your
computer. When prompted, insert Windows NT Disk 2.
3
From the Welcome to Setup Screen, press Enter to set up
Windows NT.
4
When prompted, select Custom setup.
Note:
If you are installing an Ultra2 SCSI host adapter
such as the AHA-2940U2W, you cannot select Express
setup, because the
aic78u2.sys driver is not
embedded. Selecting Express setup loads the
embedded driver
aic78xx.sys included with Windows
NT which is for Ultra SCSI adapters only.