Observing System Startup andPerforming a Basic Configuration 4-53
Performing Other Configuration Tasks
Note During the squeeze operation, the system maintains a log identifying which of the
squeeze functions has been accomplished so that the system can return to the proper place
and continue the operation in the event of a power failure.
The character “Z” indicates that the log has been erased following the successful squeeze
operation.
Enabling Booting from Flash Memory
To enable booting from Flash memory, set the boot field in the software configuration
register (bits 3 through 0) to a value between 2 and 15. These values are used with the boot
system flash device:filename command, where device can be slot0:, slot1:, or bootflash:,
and filename is the name of the file you want the system to boot.
For more detailed information about setting values in the software configuration register,
refer to the earlier section entitled “Configuring the Software Configuration Register.”
To enter the global configuration mode (while the system is running) and specify a Flash
filename from which to boot the system, enter the configure terminal command at the
privileged EXEC mode prompt:
Router# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)# boot system flash device:filename
To disable the Break function and enable the boot system flash device:filename command,
issue the config-register command at the global configuration mode with the configuration
register value shown below:
Router(config)# config-reg 0x0102
Ctrl-z
Router#