134CHAPTER 10: SOFTWARE UPGRADE AND BOOT OPTIONS

To access the BootROM menu, follow these steps:

1Attach to the console port of the switch, as described in Chapter 2.

2With the serial port connected to a properly configured terminal or terminal emulator, power cycle the switch while depressing the spacebar on the keyboard of the terminal.

As soon as you see the BootROM->prompt, release the spacebar. You can see a simple help menu by pressing h . Options in the menu include

Selecting the image to boot from

Booting to factory default configuration

Performing a serial download of an image

For example, to change the image that the switch boots from in flash memory, press 1 for the image stored in primary or 2 for the image stored in secondary. Then, press the f key to boot from newly selected on-board flash memory.

To boot to factory default configuration, press the d key for default and the f key to boot from the configured on-board flash.

To perform a serial download, you can optionally change the baud rate to 38.4K using the b command, and then pressing the s key to prepare the switch for an image to be sent from your terminal using the XMODEM protocol. After this has completed, select the g command, to boot the image that is currently in RAM. The switch restores the console port to 9600 bps, and begins the boot process. Doing a serial download does not store an image into flash, it only allows the switch to boot an operational image so that a normal TFTP upgrade from CLI can then be performed.

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3Com 9100 manual Software Upgrade and Boot Options