Cisco PRP-2 Installation And Configuration Manual page 70

Additional Configuration and Maintenance Tasks
The Flash disk does not insert all the way inside the PRP; a portion of the card remains outside of the
Caution
slot. Do not attempt to force the card past this point.
Working with Flash Disks
A Flash disk contains the Cisco IOS software image you need to boot your router. In some cases, you
might need to insert a new Flash disk and copy images or backup configuration files onto it. Before you
can use a new Flash disk, you must format it.
When using Cisco IOS commands, there is one major difference between using Flash disks and linear
Flash memory cards: When using a linear Flash memory card, the Cisco IOS command to identify and
access the card is slot0: or slot1:, depending on the card slot in use. When using a Flash disk, those
commands are replaced with disk0: or disk1:. Other specific Flash disk information is found in the
remainder of this section.
This publication does not cover all Cisco IOS Flash card commands. For complete Flash card command
Note
descriptions and configuration information, refer to the Cisco IOS Configuration Fundamentals
Command Reference and to the Cisco IOS Configuration Fundamentals Configuration Guide.
Booting from a Flash Disk
This section describes the commands used to boot from a Flash disk. Flash disks are accessed using
disk0: or disk1:, depending on the card slot location, instead of slot0: or slot1:, which is used with linear
Flash memory cards.
Note A boot image that supports the ATA Flash disk file system must reside in bootflash.
To enable booting from a Flash disk, set the register bits to 0x2102 and add the boot system command,
as follows:
Router# configure terminal
Enter configuration commands, one per line. End with CTRL-Z.
Router(config)# config-reg 0x2102
Router(config)# boot system disk0:c12kprp-p-mz.120-22.S
Router(config)# ^Z
Router# copy running-config startup-config
The boot system command may require a file name when applied to a Flash disk. The format is described
in Table
Table 25
Router(config)# boot system disk0:filename
Router(config)# boot system disk1:filename
1. Entering a filename is optional. If a filename is not specified, the system attempts to boot the first file located on the
70
25.
Boot System Command Format
Flash disk.
1
Boots the named file from the Flash disk in slot 0.
1
Boots the named file from the Flash disk in slot 1.
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