User's Guide

5-11
Installing Windows NT 4.0
Swapping a Host Adapter
Swapping an Ultra320 Family host adapter for a non-Ultra320 host
adapter is similar to the procedure for adding a host adapter. The
important distinction is that you make all software configuration
changes while Windows NT 4.0 is running and before you make
the hardware changes.
Note: If you do not install the driver that comes with the new
host adapter, it may result in a Windows NT 4.0 boot failure.
To swap adapters:
1 Install the driver for the Ultra320 Family host adapter by
following the steps in Installing the Driver When Windows NT 4.0
is Already Installed on page 5-4.
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 Removing a Host Adapter on page 5-9.
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.
ASC-39320D UG.book Page 11 Monday, July 22, 2002 1:42 PM