Installation manual

56 | System Boot

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To configure the chassis from the BOOT_USER prompt, use the following commands:

Command

Purpose

help

• Enter help or ? to display a list of available commands and syntax.

• Enter syntax help t display syntax information and variable descriptions.

boot change {primary | secondary |

default}

If your configuration displays no pre-configured operating system boot

parameters, use the boot change command to edit appropriate fields.

• The primary operating system boot parameters are used in the first attempt

to boot the system.

• The secondary operating system boot parameters are used if the primary

operating system boot selection is not available.

• The default operating system boot parameters are used if the secondary

operating system boot parameter is not available. The default parameters

always reside on the internal flash drive (flash).

NOTE: These parameters, as well as other boot parameters, can be

modified in run-time mode

When you enter the boot change command, you are prompted for a response.

• Enter a new parameter or press the ENTER key (carriage return) to accept

the default parameter.

• Enter . (period) to clear a field.

• Enter - (dash) to edit a field above the current cursor position.

NOTE: When you enter a new parameter that extends beyond 80

characters, you cannot use the BACKSPACE key to correct any mistakes. If

you make a mistake, you must re-enter the parameter.

show bootvar This command displays the current operating system boot configuration

parameters

show bootflash This command displays information about the current boot ROM.