Digital Equipment VAX 4000 108, Информация пользователя

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Console Commands
A-2 VAX 4000 Model 108 User Information
BOOT
The BOOT command initializes the processor and executes the VMB (virtual memory
block) program. The VMB program tries to boot the operating system from the specified
device or list of devices, or from the default boot device if none is specified. The console
qualifies the bootstrap operation by passing a boot flags bitmap to the VMB program in
R5.
Format:
BOOT [qualifier-list] [{boot_device},{boot_device},...]
If you do not enter either the qualifier or the device name, the default value is used.
Explicitly stating the boot flags or the boot device overrides, but does not permanently
change, the corresponding default value.
When specifying a list of boot devices (up to 32 characters, with devices separated by
commas and no spaces), the system checks the devices in the order specified and boots
from the first one that contains bootable software.
_________________________ NOTE____________________________
If you include the Ethernet device, EZA0, in a string of boot devices, it must
be placed only as the last device of the string. The system continuously tries
to boot from EZA0.
___________________________________________________________
Set the default boot device and boot flags using the SET BOOT and SET BFLAG
commands. If you do not set a default boot device, the processor times out after 30 seconds
and continuously tries to boot from the Ethernet device, EZA0. To disable the autoboot
feature, use three periods in place of the device name for the SET BOOT command
(SET BOOT...).
Qualifiers:
Command specific:
/R5:{boot_flags}
A 32-bit hexadecimal value passed to the VMB program in R5. The
console does not interpret this value. Use the SET BFLAG
command to specify a default boot flags longword. Use the SHOW
BFLAG command to display the longword.
>(/{boot_flags}
Same as /R5:{boot_flags})
[device_name]
A character string of up to 32 characters. When specifying a list of
boot devices, the device names should be separated by commas and
no spaces. Apart from checking the length, the console does not
interpret or validate the device name. The console converts the