Appendix; Formatting The Flash Memory; Formatting Procedures For Flash Memory; Formatting Procedures - Cisco 2431 - IAD Router Software Configuration Manual

Formatting the Flash Memory

This appendix describes how to format the flash memory into a Class B flash file system, known as the
low-end file system (LEFS), or into a Class C flash file system, which is similar to the standard DOS
file system. It also describes how to perform file and directory operations in each file system.
The IAD2435 IAD does not support LEFS, but supports Disk Operating System Filing System (DOSFS)
Note
and refers to internal compact flash as flash only.
This appendix presents the following major topics:
•
•
For additional information on formatting flash memory, see the Maintaining System Memory section in
the

Formatting Procedures for Flash Memory

The following sections show formatting procedures for internal and external flash memory.

Formatting Procedures

We recommend that you erase (Class B) or format (Class C) new flash memory to initialize them with
either a Class B or Class C flash file system. This ensures proper formatting and enables the ROM
monitor to recognize and boot the flash memory.
Flash memory that is formatted with the standard DOS file system does not support booting from the
Note

ROM monitor.

Determining the File System on Flash Memory

To determine the file system of external flash memory, enter the show slot0: all command.
Note slot0 is not supported on the IAD2435 IAD.
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Formatting Procedures for Flash Memory, page B-1
File and Directory Operations, page B-5
Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2
Cisco IAD2430 Series Integrated Access Devices Software Configuration Guide
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