Cisco WS-C2960-24PC-L Software Guide - Page 535
Step 6, Caution,
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Chapter 33 Working with System Software Images Upgrading the ROM Monitor Step 6 Step 7 If the last line in the output of the show boot command is the following: "boot:image specified by the boot system commands," go to Step 7. This example shows the autoboot configuration: Console> (enable) show boot BOOT variable = bootflash:cat4000.5-5-8.bin,1; CONFIG_FILE variable = bootflash:switch.cfg Configuration register is 0x102 ignore-config:disabled auto-config:non-recurring console baud:9600 boot:image specified by the boot system commands Console > (enable) If the last line in the output of the show boot command does not say "boot:image specified by the boot system commands," use the set boot config-register command to set the boot configuration. This example shows how to set the boot configuration: Console> (enable) set boot config-register boot system Configuration register is 0x102 ignore-config:disabled auto-config:non-recurring console baud:9600 boot:image specified by the boot system commands Console> (enable) Use the set boot system flash command to prepend the promupgrade image to the boot string. Note Make sure that you use the prepend keyword with the set boot system flash command. The switch always boots the first image in the boot string, and you want the promupgrade image to boot first. Step 8 This example shows how to prepend the promupgrade image to the boot string: Console> (enable) set boot system flash bootflash:cat4000-promupgrade.6-1-4.bin prepend BOOT variable = bootflash:cat4000-promupgrade.6-1-4.bin,1;bootflash:cat4000.5-5-8.bin,1; Reset the switch to boot the promupgrade program. Caution No intervention is necessary to complete the upgrade. Do not interrupt the boot process by performing a reset, power cycle, OIR of the supervisor engine,and so on, for at least 5 minutes. If the process is not allowed to complete, you might damage the switch and have to return it to Cisco for repair. Upgrading the ROMMON may require up to 5 minutes because the switch boots the promupgrade image. This special program erases the current ROMMON from Flash and installs the new one. After you install the new ROMMON, the system resets again and boots the next image in the BOOT string. If the BOOT string was configured as described in Step 7 on page 33-11, the next image is the software image that the switch was originally configured to boot. Note A Telnet session is disconnected when you reset the switch; you will lose connectivity to the switch. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 33-11