Owner`s manual

The BOOT command syntax is:
B[OOT][/qualifier] [<parameter>]
BOOT command qualifiers are summarized in Table 5–5. The qualifier
includes a variable which is a node number, a value to be loaded into a
register, or the name of a file when using the /FILENAME qualifier. A
variable is a required argument to the qualifier. If you do not specify a
variable, you receive an error message in the form:
?0021 Illegal command
In the syntax <parameter> can be a string of the form ddnn. The variable
dd is a 2-character mnemonic for the device type (MI or MU for tape, DU or
DI for disk, EX, FX, or ET for Ethernet, or CSA1 for the in-cabinet console
load device), and nn is a 1- or 2-digit hexadecimal number for the boot
device. The nn portion of the boot device is ignored if the /R3 qualifier is
used.
You can also use <parameter> as a 1- to 4-character name of a saved boot
specification that you have created. Your saved specification needs to supply
values for the boot device and other qualifiers, if required. You can override
any saved qualifier value by specifying the qualifier with a new value. For
information on creating a saved boot specification, see Section 5.18.1.
If you omit <parameter>, the program uses the default saved boot
specification. You define a default saved boot specification by using the
reserved name DEFAULT and the SET BOOT command. Use unique names
when you name your saved boot specifications. To avoid confusion, choose
names for saved boot specifications that are distinct from the actual device
names.
When you have successfully specified the command, your console terminal
waits while the system initializes itself and performs self-test. When
the operating system comes up, your console terminal displays the login
banners of the operating system, and your console terminal is then
operating in program mode.
Console 5–15