Chapter 3 Installing the Router
IOS Software Configuration for the Router
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Cisco 12006 and Cisco 12406 Router Installation and Configuration Guide
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Booting from the Cisco IOS Software Image
After locating a valid Cisco IOS software image, you can boot from that image
manually by issuing the appropriate ROM monitor mode boot commands from the
list in Table 3-13.
Ensure that the Flash memory card inserted in PCMCIA slot 0 contains a valid
Cisco IOS software image. Otherwise, the system will boot an invalid image from
the Flash memory card. To examine the contents of a Flash memory card, enter
the dir slotn: command.
If you did not change the contents of the software configuration register, the
factory default setting of 0x0102 in the software configuration register causes the
system to boot Cisco IOS software from a Flash memory card inserted in
PCMCIA slot 0 the next time you boot the router.
Tab l e 3-13 ROM Monitor Boot Commands
Command Description
boot (No argument.) Boots the default image found in the
onboard Flash memory SIMM. The image is loaded
into the SIMM at the factory.
boot flash Attempts to boot the router using the first file found
in the Flash memory card inserted in slot 0 of the RP.
boot slot0: filename Boots the router using the specified file from the
Flash memory card in slot 0 of the RP.
boot slot1: filename Boots the router using the specified file from the
Flash memory card in slot 1 of the RP.
boot bootflash: filename Boots the router using the specified file from the
onboard Flash memory SIMM (NVRAM) on the RP.
boot tftp: filename
[host]
Boots the router using the specified file from a host
TFTP server in the network.