IBM Adaptec Ultra320 SCSI User Manual page 84

IBM Ultra320 SCSI Controller 2 User's Guide
To swap adapters:
1 Install the driver for the Ultra320 Family host adapter by
following the steps in
is Already Installed on page
It is not essential to remove the device driver for the host
adapter you are replacing. Windows NT 4.0 dynamically
detects the absence or presence of host adapter hardware, and
no problems should arise if you leave the existing device driver
installed. You may remove the device driver later, after you
have successfully restarted Windows NT 4.0. However, if you
leave the driver installed, the system alerts you with an error
message of the extra device driver every time you start your
computer. See
2 Once the new device driver is installed, shut down
Windows NT 4.0 and replace the existing host adapter with the
Ultra320 Family host adapter.
3 Restart your computer and Windows NT 4.0. It is possible that
some drive letter assignments may change from the previous
configuration.
5-8
Installing the Driver When Windows NT 4.0
5-4.
Removing a Host Adapter on page 5-6.