Starting the System and Observing Initial Conditions
Cisco 12008 Gigabit Switch Router Installation and Configuration Guide
4-8
Note If a Flash memory card containing a valid Cisco IOS software image is inserted in
PCMCIA slot 0 and the software configuration register is set to 0x0102 (the factory defau lt
setting), the system automatically boots using this image. The system then enters the setup
facility, prompting you to perform a basic system configuration by means of an interactive
script (see Step 9). Otherwise, the system remains at the ROM monitor prompt (rommon>),
enabling you to enter configuration commands at the console terminal. In this case, proceed
with Step 5.
Step5 If the ROM monitor prompt (rommon>) appears, you must boot a Cisco IOS
software image manually by issuing the boot command. The various forms of
the boot command are described briefly below:
•boot—This form of the boot command (without an argument) boots the
default Cisco IOS software image present in the onboard Flash memory
SIMM. This image is pre-loaded into the SIMM at the factory prior to router
shipment.
Caution To prevent problems, issue the boot flash command with care. Ensure that the
Flash memory card in PCMCIA slot 0 contains a valid Cisco IOS image; otherwise, you
could instruct the system to boot other than a valid image from the Flash memory card. To
examine the contents of a Flash memory card, issue a directory slot0: command.
•boot flash—This form of the boot command does not specify a particular
PCMCIA slot. Therefore, the system assumes by default that the Flash
memory card is inserted in slot 0; accordingly, the system boots the first file
found in the Flash memory card in slot 0.
•boot slot0: filename—This form of the boot command boots the specified
file from the Flash memory card in PCMCIA slot0.
•boot slot1: filename—This form of the boot command boots the specified
file from the Flash memory card in PCMCIA slot1.
•boot filename [host]—This form of the boot command boots the specified
file from a host TFTP server in the network.