Compaq AlphaServer ES45 1B, Owner'S Manual

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Firmware 5-25
5.6 Booting an Operating System
The boot command boots the Tru64 UNIX, Linux, or OpenVMS operat-
ing system. You can specify a boot device, operating system-specific
boot information (boot flags), and an Ethernet protocol for network
boots. You can also specify whether the boot program should halt and
remain in console mode.
Example 5–10 OpenVMS Boot
P00>>> boot dkb0
(boot dkb0.0.0.2.1 -flags 0)
block 0 of dkb0.0.0.2.1 is a valid boot block
reading 1002 blocks from dkb0.0.0.2.1
bootstrap code read in
base = 200000, image_start = 0, image_bytes = 7d400
initializing HWRPB at 2000
initializing page table at 1f2000
initializing machine state
setting affinity to the primary CPU
jumping to bootstrap code
OpenVMS (TM) Operating System, Version 7.3
Description
The boot command initializes the processor, loads a program image from the
specified boot device, and transfers control to that image. If you do not specify a
boot device in the command line, the default boot device is used. The default
boot device is determined by the value of the bootdef_dev environment vari-
able, described in Section 5.14.2.
If you specify a list of boot devices, a bootstrap is attempted from each device in
order. Then control passes to the first successfully booted image. In a list, al-
ways enter network devices last, because network bootstraps terminate only if a
fatal error occurs or when an image is successfully loaded.
Syntax
boot [-file filename] [-flags [value]] [-halt] [-protocols enet_protocol]
[boot_dev]