Configuring Your System
3–13
Booting the System
The boot command performs the following functions:
•
Initializes the processor.
•
Loads a program image from the specified boot device.
•
Transfers control to the loaded image.
The syntax of the boot command is:
boot [-file <filename>] [-flags <longword>[,<longword>]]
[-protocols <enet_protocol>] [-halt] [<boot_device>]
The boot command options are described in Table 3–3.
Table 3–3: SRM Boot Command
Command Option
Description
-file <filename>
Specifies the name of a file to load into the system. For
booting from Ethernet, this name is limited to 15
characters. Use the set boot_file command to set the
environment variable that specifies a default boot file.
-flags
<longword>[,<longword>]
Specifies additional information for the operating system.
For systems with OpenVMS, root number and boot flags
are specified here. For Digital UNIX systems, the
following symbolic values may be used:
i = interactive boot
s = boot to single user
a = autoboot to multiuser
Use the set boot_osflags command to set an environment
variable that specifies a default boot flag value.
-protocols <enet_protocol>
Specifies the Ethernet protocol(s) that will be used for a
network boot. Values may be set mop or set bootp.
-halt
Forces the bootstrap operation to halt and invoke the
console program after the image is loaded and the page
tables and other data structures are set up.
<boot_device>
Specifies a device path or list of devices that the firmware
will attempt to boot. Use the set bootdef_dev command
to set an environment variable that specifies a default boot
device.
