This version is used on the following models: 705, 7x0, 715/33/50/75, 725/50/75, 735, 755. There are two levels of interactive commands in this version. The first level is a short menu:
b) Boot from specified device
s) Search for bootable device
a) Enter Boot Administration mode
x) Exit and continue boot sequence
Select from menu:
which provides the following commands:
b
boot from a device found during the scan, either with its short “P#” form, or a complete name specification. For example, to boot from the SCSI disk with id 6 off the built-in (first) controller, one would enter b scsi.6.0.
s
rescan for bootable devices.
a
enter the second part of interactive mode.
x
resume an interrupted boot sequence.
The “Boot Administration” mode, recognizable with its
BOOT_ADMIN> prompt, controls the various boot options. The complete list of commands depends on the machine and PDC version. The following list only mentions commands impacting the boot process.
AUTOSELECT
Displays or changes the autoboot setting. If autoselect is set to “on”, the PDC will always attempt to boot the first bootable device found in this order:
1.
Boot device path setting.
2.
SCSI devices connected to the built-in SCSI controller, the highest ID numbers being preferred.
4.
Other SCSI devices connected to secondary controllers, the highest ID numbers being preferred.
If the
primary path setting defines a bootable device, no device scan will occur.
BOOT
Boots off the specified device. It is similar to the b command from the short menu above. The “primary” and “alternate” path settings may be booted with boot pri and boot alt respectively.
PATH
Displays or changes the boot and console devices. The boot device is defined as the “primary” path, and another setting may be stored as the “alternate” path for rescue purposes. For example, to define the primary boot path to the SCSI disk with ID 5 connected to the built-in controller, one would enter
path primary scsi.5
When invoked without parameters,
path will list the various path settings.