Cisco Systems 12010, 12810 Locating a Valid Cisco IOS Software Image, Dir bootflash, Dir slot0

Chapter 4 System Startup and Basic System Configuration

Manually Booting the System

Locating a Valid Cisco IOS Software Image

Use the following procedure to locate a Cisco IOS software image to manually boot the router from the ROM monitor prompt (rommon>).

Step 1 Enter the ROM monitor mode dir bootflash command to examine the contents of the onboard flash memory in NVRAM on the RP.

rommon	1> dir bootflash:
File size		Checksum	File name
3277967 bytes (0x32048f)		0x6b331e30	gsr-p-mz.120-7.4.5
rommon	2>

•If the memory contains the desired Cisco IOS boot image, proceed to the “Booting from the Cisco IOS Software Image” section on page 4-12.

•If the onboard flash memory does not contain the desired Cisco IOS boot image, proceed to the next step.

Step 2 Enter the dir slotn: command, where n represents either slot 0 (0) or slot 1(1) to find a valid image by examining the contents of the flash memory card.

The following example shows the contents of the flash memory card in slot 0:

rommon	2> dir slot0:
File size		Checksum	File name
3277967 bytes (0x32048f)		0x6b331e30	gsr-p-mz.120-7.4.5
rommon	3>

After you locate a valid boot image, proceed to the “Booting from the Cisco IOS Software Image” section on page 4-12.

Booting from the Cisco IOS Software Image

To boot an image manually, issue the appropriate ROM monitor mode boot command after locating a valid Cisco IOS software image. Boot the image using one of the boot commands shown in Table 4-3.

	Cisco 12010, Cisco 12410, and Cisco 12810 Router Installation and Configuration Guide
4-12	OL-11496-01