User Guide

2-15
Microsoft Windows NT Installation
Swapping a Host Adapter
Swapping a 7800 Family host adapter for a non-7800 Family 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 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 boot
failure.
To swap adapters, follow these steps:
1
Install the driver for the 7800 Family host adapter by following
the steps in Installing the Driver When Windows NT is Already
Installed on page 2-5.
It is not essential to remove the device driver for the host
adapter you are replacing. Windows NT 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 rebooted Windows NT. However, if you
leave the driver installed, the system alerts you with an error
message of the extra device driver every time you boot. See
Removing a Host Adapter on page 2-12.
2
Once the new device driver is installed, shut down Windows
NT and replace the existing host adapter with the 7800 Family
host adapter.
3
Restart your computer and Windows NT. It is possible that
some drive letter assignments may change from the previous
configuration.