DEC 4000 600 series, Owner'S Manual, Page: 57 / 242

boot
boot
Synopsis Bootstrap the system.
boot [-flags [longword,]longword] [-halt] [boot_device]
Description Initializes the processor, loads a program image from the
specified boot device, and transfers control to that image.
If you specify a list of 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, since
network bootstraps only terminate if a fatal error occurs or an
image is successfully loaded.
The -flags option can pass additional information to the operating
system about the boot that you are requesting.
You can abbreviate the boot command by entering boot or b .
When you enter either of these abbreviations, an environment
variable (shown in parenthesis) provides a default value for the
following information:
• Boot device (bootdef_dev)
• Boot flags (boot_osflags)
If you specify the boot device or boot flags on the command
line, the current default value is overriden for the current boot
request. However, the corresponding environment variable is not
changed.
Parameters
Parameter Description
boot_device A device path or list of devices from which
the console program attempts to boot, or
a saved boot specification in the form of
an environment variable. Use the
set
bootdef_dev command to define the default
boot device.
Console Commands 3–5