B-18
Cisco 2600 Series Routers Hardware Installation Guide
OL-2171-02
Appendix B Maintaining the Router
Installing and Formatting Compact Flash Memory Cards in Cisco 2691 Routers
Installing and Formatting Compact Flash Memory Cards in
Cisco 2691 Routers
The operation system software, or image, is stored in Flash memory on a compact Flash memory card.
This section describes how to install compact Flash memory cards in Cisco 2691 routers, how to format
the cards into a Class B Flash file system (low end file system) or a Class C Flash file system (similar
to DOS), and how to perform file and directory operations in each file system. In Cisco 2691 routers,
the compact Flash memory card mounts on a connector on the system board. You can install a compact
Flash memory card with 32-, 64-, or 128-MB of memory.
This section contains the following subsections:
•
Preventing Electrostatic Discharge Damage, page B-18
•
Tools and Equipment Needed, page B-18
•
Compact Flash Memory Card Installation and Removal, page B-19
•
Formatting Procedures for Compact Flash Memory Cards, page B-20
•
File and Directory Operations, page B-22
Preventing Electrostatic Discharge Damage
Compact Flash memory cards can be damaged by electrostatic discharge (ESD). ESD damage, which
can occur when electronic cards or components are handled improperly, can cause complete or
intermittent failures.
Follow these guidelines to prevent ESD damage:
•
Always use an ESD wrist or ankle strap and ensure that it makes good skin contact.
•
Connect the equipment end of the strap to an unfinished chassis surface.
•
Place a removed compact Flash memory card on an antistatic surface or in a static shielding bag. If
the card will be returned to the factory, immediately place it in a static shielding bag.
•
Avoid contact between the card and clothing. The wrist strap protects the card from ESD voltages
on the body only; ESD voltages on clothing can still cause damage.
•
Do not remove the wrist strap until the installation is complete.
Caution
For safety, periodically check the resistance value of the antistatic strap. The measurement should be
between 1 and 10 megohms (Mohms).
Tools and Equipment Needed
You need the following tools and equipment to remove and install compact Flash memory cards:
•
ESD-preventive wrist strap
•
Antistatic bag or mat
•
Number 2 Phillips screwdriver or flat-blade screwdriver
