Booting An Operating System - Compaq AlphaServer DS20E Reference Manual

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7.11 Booting an Operating System

The boot command boots the Tru64 UNIX, Linux, or OpenVMS
operating 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 7–9 Tru64 UNIX Boot (Abbreviated)
P00>>>boot
(boot dka0.0.0.7.1 -flags A)
block 0 of dka0.0.0.7.1 is a valid boot block
reading 13 blocks from dka0.0.0.7.1
bootstrap code read in
base = 200000, image_start = 0, image_bytes = 1a00
initializing HWRPB at 2000
initializing page table at 17f5c000
initializing machine state
setting affinity to the primary CPU
jumping to bootstrap code
UNIX boot - Sun May 14 05:34:40 EDT 2000
Loading vmunix
.
.
.
.The system is ready.
Digital UNIX Version V4.0 (mech2) console
login:
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
variable, described in Chapter 4.
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,
always enter network devices last, because network bootstraps terminate only if
a fatal error occurs or when an image is successfully loaded.
The syntax is:
Using the SRM Console 7-23