DEC 4000 Model 200 Operation Manual page 47

Using the SET BOOT Command
To direct the system to boot automatically from a specific device or to change
the setting of the default boot device, put the system into console mode and
at the prompt (>>>), enter ''SET BOOT device-name''. For example,
>>>
SET BOOT EZA0
sets the system default boot device to be the Ethernet controller.
Once you have selected a boot device, the system autoboots from that device
each time you turn it on.
Using ''SET BOOT device-name,device-name,device-name'', you can also
specify a string of default boot devices (up to 32 characters, with devices
separated by commas and no spaces) for which the system will check for
bootable software. The system checks the devices in the order specified and
boots from the first one that contains bootable software. For example,
>>>
SET BOOT DUA0,DIA0,MIA0,EZA0
directs the system to use DUA0, DIA0, MIA0, and EZA0 as the default
boot devices. When the system autoboots, or if the BOOT command is used
without specifying a device, the system will boot from the first default boot
device that contains bootable software.
NOTE: If included in a string of boot devices, the Ethernet device, EZA0,
should only be placed as the last device of the string. The system will
continuously attempt to boot from EZA0.
To determine the name of the device from which to boot the system, refer
to Table 2–2 or enter the SHOW DEVICE command at the console prompt
(>>>). Figure 2–6 shows a sample list of devices. The system displays the
logical device name, preceded by a dash (–), for each device.
NOTE: Selecting a default boot device other than the Ethernet device, EZA0,
is not appropriate for diskless and tapeless systems that must boot software
over the network.
2–10 VAX 4000 Model 200 (BA430) Operation