Installing The Compact Flash Memory Card; Formatting Procedures For Compact Flash Memory Cards; Determining The File System On A Compact Flash Memory Card - Cisco 2600 Series Hardware Installation Manual

Installing and Formatting Compact Flash Memory Cards in Cisco 2691 Routers

Installing the Compact Flash Memory Card

You can install a compact Flash memory card with 32-, 64-, or 128-MB of memory.
Complete the following steps to install the compact Flash memory card:
Locate the compact Flash memory-card connector on the system board. (See
Step 1
Insert the connector end of the compact Flash memory card into the connector until the card is seated in
Step 2
the connector. The card is keyed, so that it cannot be inserted incorrectly.
Reinstall the retention screw to retain the compact Flash memory card.
Step 3
Install the chassis cover as described in the
Step 4
page
Refer to the
Step 5
instructions on formatting the compact Flash memory card.

Formatting Procedures for Compact Flash Memory Cards

Cisco recommends that you erase (Class B) or format (Class C) new compact Flash memory cards 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.
The Class B Flash file system is also known as the low end file system (LEFS).
The Class C Flash file system is similar to the standard DOS file system.
Note A compact Flash memory card formatted with the standard DOS file system does not support booting
from the ROM monitor.

Determining the File System on a Compact Flash Memory Card

To determine the file system of a compact Flash memory card in a Cisco 2691, enter the show flash:
command.
•
•
The following examples show outputs for Class B and Class C Flash file systems:
Class B Flash File System (Geometry and Format Information not Displayed):
Router# show flash:
System CompactFlash directory:
File
1
[6380560 bytes used, 9675760 available, 16056320 total]
15680K bytes of ATA System CompactFlash (Read/Write)
Cisco 2600 Series Routers Hardware Installation Guide
B-20
B35.
"Formatting Procedures for Compact Flash Memory Cards" section on page B20
If geometry and format information of the card is not displayed, the card is formatted with a Class B
Flash file system.
If geometry and format information of the card is displayed, the card is formatted with a Class C
Flash file system.
Length Name/status
6380496 c2691-i-mz.122-7.6.T1
"Replacing the Chassis Cover on Cisco 2691" section on
Appendix B Maintaining the Router
Figure B-12.)
for
OL-2171-02