Specifications

3-24 Compaq AlphaServer ES40 Owner’s Guide
3.8 Switching Between Operating Systems
The system supports three operating systems. You can install Tru64
UNIX, OpenVMS, or Windows NT. You can also switch from one
operating system to another by removing the disk for the operating
system that is currently installed and installing the disk for the
operating system you want to run.
WARNING: To prevent injury, access is limited to persons who
have appropriate technical training and experience. Such
persons are expected to understand the hazards of working
within this equipment and take measures to minimize danger to
themselves or others. These measures include:
1. Remove any jewelry that may conduct electricity.
2. If accessing the system card cage, power down the system and
wait two minutes to allow components to cool.
3. Wear an anti-static wrist strap when handling internal
components.
CAUTION: The file structures of the three operating systems are incompatible.
When you switch between operating systems, you cannot read the
data off disks associated with the operating system that was
running previously.
When you switch between operating systems, be sure to pull out the
system and data disks for the operating system you will not be
using. Otherwise, you risk corrupting data on the system disk.
To run Windows NT on an AlphaServer ES40 system, you must use
only options that are supported on Windows NT. See the Supported
Options List for Compaq
ProLiant Alpha 4200/4200R.