Compaq DS20E - AlphaStation - 1 GB RAM User Manual page 49

The bootdef_dev environment variable specifies the default boot device.
The show device command displays device information, including name and
type of connection to the system. See Section 4.3 for a description of the show
device command and the device naming convention.
The disk dua110.0.0.8.0 is on the cluster that includes this system.
No boot device is specified in the boot command; the default boot device was
set with the environment variable. See Section 4.5 for a description of the boot
command.
The boot command accepts the name of a boot device, a boot file name
through the -file option, and boot flags through the -flags option. The
environment variables bootdef_dev, boot_file, and boot_osflags can also be
used to specify the default boot device or device list, the default boot file, and
flag information. When an option and the corresponding environment variable
are both in a command string, the option overrides the environment variable.
The value of the environment variable, however, is not changed. See Section
4.18 for information about environment variables.
The operating system banner prints.
Operation 3-15