Cisco 3700 series Installation et formatage - Page 20

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Cisco 3700 series Installation et formatage

Formatting Procedures for CompactFlash Memory Cards

Formatting Procedures for CompactFlash Memory Cards
The following sections describe formatting procedures for internal and external CompactFlash memory
cards.
Formatting Procedures
Cisco recommends that you erase (Class B) or format (Class C) new CompactFlash 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.
A CompactFlash memory card formatted with the standard DOS file system does not support booting
Note
from the ROM monitor.
Determining the File System on a CompactFlash Memory Card
To determine the file system of an external CompactFlash memory card, enter the show slot0: all
command. To determine the file system of an internal CompactFlash memory card, enter the
show flash: all command.
•
•
The following examples show outputs for Class B and Class C Flash file systems:
External card with Class B Flash file system (geometry and format information not displayed):
Router#show slot0: all
Partition
Mode
1
Slot0 CompactFlash directory:
File
1
[6658440 bytes used, 25454200 available, 32112640 total]
31360K bytes of ATA Slot0 CompactFlash (Read/Write)
Chip information NOT available.
Installing and Formatting Cisco 2691, Cisco 3631 and Cisco 3700 CompactFlash Memory Cards
20
If geometry and format information is not displayed, the card is formatted with a Class B Flash file
system.
If geometry and format information is displayed, the card is formatted with a Class C Flash file
system.
Size
Used
31360K
6502K
Length
Name/status
addr
fcksum
ccksum
6658376
c3725-i-mz
0x40
0xE0FF
0xE0FF
Free
Bank-Size
State
24857K
0K
Read/Write
March 2002
Copy
Direct
78-13892-03