How To Format Compactflash Memory Cards; Determining The File System On A Compactflash Memory Card - Cisco 1941W Configuration Manual

Online Insertion and Removal
Table B-1
Slot Number
Slot0
Slot1
1. The maximum storage capacity for the CF in Slot0 and Slot1 is 4GB.
2. Slot 0 is the default CF slot. CF in slot0 can store system image, configuration, and data files. CF must be present in this slot
Online Insertion and Removal
Online insertion and removal (OIR) is a feature that allows you to replace CF memory cards without
turning off the router and without affecting the operation of other interfaces. OIR of CF memory cards
provides uninterrupted operation to network users, maintains routing information, and ensures session
preservation.
The external CF memory card should not be removed if the flash memory busy "CF" LED on the router
Caution
is blinking, because this indicates that the software is accessing the CF memory card. Removing the CF
memory card may disrupt the network, because some software features use the CF memory card to store
tables and other important data.
For instructions on inserting, removing, and replacing the external CF memory card, see the hardware
installation guide for your router.

How to Format CompactFlash Memory Cards

This section contains the following procedures:
•
•

Determining the File System on a CompactFlash Memory Card

To determine the file system of a CF memory card, enter the show flash: all command in privileged
EXEC mode.
•
•
The following examples show sample outputs for Class B and Class C flash file systems.
Note
Cisco 3900 Series, Cisco 2900 Series, and Cisco 1900 Series Integrated Services Routers Generation 2 Software Configuration Guide
B-2
Compact Flash Slot Numbering and Naming
2
for the router to boot and perform normal file operations.
Determining the File System on a CompactFlash Memory Card, page B-2
Formatting CompactFlash Memory as a Class C File System, page B-3
If geometry and format information does not appear in the output, the card is formatted with a
Class B flash file system. Class B files systems are not supported on CF inserted in Cisco 3900
Series, 2900 Series, and 1900 Series Integrated Services Routers.
If geometry and format information appears in the output, the card is formatted with a Class C flash
file system.
Use in the command syntax to access CF in slot1. Use
flash1:
to access CF in slot0.
CF Filenames
flash0:
flash1:
Appendix B Using CompactFlash Memory Cards
1
Size
256MB
0
in the command syntax
flash0: