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Using the CompactFlash Disk
This appendix describes installation prerequisites you should observe before you can use the
CompactFlash Disk in your system, and includes the following sections:
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Product Description
CompactFlash Disks are designed with flash technology, a nonvolatile storage solution that does not
require a battery to retain data indefinitely. CompactFlash Disks provide complete PCMCIA-ATA
functionality and compatibility as defined by the CompactFlash Association in their CF+ and
CompactFlash Specification, revision 1.4.
The CompactFlash Disk is more flexible than linear flash memory because the CompactFlash Disk has
controller circuitry that allows it to emulate a hard disk and automatically maps out bad blocks and
performs automatic block erasure. Further, the CompactFlash Disk provides the capability to allocate
noncontiguous sectors, which eliminates the need for the squeeze command (previously required with
linear flash memory cards).
The CompactFlash Disk provides increased flash-based memory space-256 MB-for storage of system
configuration files, Cisco IOS software images, and other types of system-related files.
provides memory information for the CompactFlash Disk.
Table B-1
Memory Size
256 MB
OL-11364-04
Product Description, page B-1
Hardware and Software Requirements, page B-2
Tools and Parts Required, page B-2
Compatibility Requirements, page B-2
Boot Environment Variables, page B-3
Sample Upgrade Process, page B-5
Working with a CompactFlash Disk, page B-5
CompactFlash Disk Memory Options
A P P E N D I X
Product Number
MEM-7201-FLD256=
Cisco 7201 Installation and Configuration Guide
B
Table B-1
B-1
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Troubleshooting
