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Table Of Contents
Using CompactFlash Memory Cards
Platforms Supported by This Document
How to Format CompactFlash Memory Cards
Determining the File System on a CompactFlash Memory Card
Formatting CompactFlash Memory as a Class B Flash File System
Formatting CompactFlash Memory as a Class C File System
File Operations on CompactFlash Memory Cards
Displaying Geometry and Format Information (Class C Only)
Directory Operations on a CompactFlash Memory Card
Entering a Directory and Determining Which Directory You Are In
Using CompactFlash Memory Cards
Cisco 3800 series routers, Cisco 2800 series routers, and Cisco 1800 series routers use external CompactFlash (CF) memory cards to store the system image, some software feature data, and configuration files. The CF memory cards use the following file systems. The file system that is supported depends on router model:
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Class B flash file system, also known as the low-end file system (LEFS)
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This document contains the following sections:
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Platforms Supported by This Document
Use this document with the following platforms:
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Requirements and Restrictions
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Cisco 1800 Series Routers and Cisco 2801 Routers
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Cisco 3800 Series Routers and Cisco 2800 Series Routers (Except for Cisco 2801 Routers)
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Note
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.
Caution
For instructions on inserting, removing, and replacing the external CF memory card, see the hardware installation documentation that came with your router.
How to Format CompactFlash Memory Cards
This section contains the following procedures:
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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.
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The following examples show sample outputs for Class B and Class C flash file systems.
External Card with Class B Flash File System: Example
The geometry and format information does not appear.
Router# show flash: allPartition Size Used Free Bank-Size State CopyMode1 125184K 20390K 104793K 0K Read/WriteDirectSystem Compact Flash directory:File Length Name/statusaddr fcksum ccksum1 6658376 c28xx-i-mz0x40 0xE0FF 0xE0FF2 14221136 c2800-telcoent-mz0x6599C8 0x5C3D 0x5C3D[20879640 bytes used, 107308776 available, 128188416 total]125184K bytes of ATA System Compact Flash (Read/Write)Chip information NOT available.External Card with Class C Flash File System: Example
The geometry and format information is displayed in this format.
Router# show flash: all-#- --length-- -----date/time------ path1 6658376 Mar 01 2004 04:27:46 c28xx-i-mz25268224 bytes available (6664192 bytes used)******** ATA Flash Card Geometry/Format Info ********ATA CARD GEOMETRYNumber of Heads: 4Number of Cylinders 490Sectors per Cylinder 32Sector Size 512Total Sectors 62720ATA CARD FORMATNumber of FAT Sectors 31Sectors Per Cluster 8Number of Clusters 7796Number of Data Sectors 62560Base Root Sector 155Base FAT Sector 93Base Data Sector 187Formatting CompactFlash Memory as a Class B Flash File System
Use the erase flash: command in privileged EXEC mode to
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Formatting CompactFlash Memory as a Class B Flash File System: Example
Router# erase flash:Erasing the flash filesystem will remove all files! Continue? [confirm]Current DOS File System flash card in flash: will be formatted into LowEnd File System flash card! Continue? [confirm]Erasing device...eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee...erasedErase of flash: completeFormatting CompactFlash Memory as a Class C File System
Use the format flash: command in privileged EXEC mode to:
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Formatting CompactFlash Memory as a Class C Flash File System: Example
Router# format flash:Format operation may take a while. Continue? [confirm]Format operation will destroy all data in "flash:". Continue? [confirm]Enter volume ID (up to 64 chars)[default flash]:Current Low End File System flash card in flash will be formatted into DOSFile System flash card! Continue? [confirm]Format:Drive communication & 1st Sector Write OK...Writing Monlib sectors ..................................................................Monlib write completeFormat:All system sectors written. OK...Format:Total sectors in formatted partition:250592Format:Total bytes in formatted partition:128303104Format:Operation completed successfully.Format of flash completeFile Operations on CompactFlash Memory Cards
File and directory operations vary according to the formatted file system—Class B or Class C.
This section describes the following file operations for external CF memory cards:
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Copying Files
To copy files, enter the copy command in privileged EXEC mode. To indicate a file that is stored in a CF memory card, precede the filename with flash:.
Examples: Copying Files
In the following example, the file my-config1 on the CF memory card is copied into the startup-config file in the system memory:
Router# copy flash:my-config1 startup-configDestination filename [startup-config]?[OK]517 bytes copied in 4.188 secs (129 bytes/sec)In the following example, the file my-config2 on the CF memory card is copied into the running-config file in the system memory:
Router# copy flash:my-config2 running-configDestination filename [running-config]?709 bytes copied in 0.72 secsDisplaying Files
To display a list of files on a CF memory card, enter the dir flash: command in privileged EXEC mode:
Router# dir flash:Directory of flash:/1580 -rw- 6462268 Mar 06 2004 06:14:02 c28xx-i-mz.3600ata3 -rw- 6458388 Mar 01 2004 00:01:24 c28xx-i-mz63930368 bytes total (51007488 bytes free)Displaying File Content
To display the content of a file that is stored in flash memory, enter the more flash: command in privileged EXEC mode:
Router# more flash:c28xx-i-mz00000000: 7F454C46 01020100 00000000 00000000 .ELF .... .... ....00000010: 00020061 00000001 80008000 00000034 ...a .... .... ...400000020: 00000054 20000001 00340020 00010028 ...T ... .4. ...(00000030: 00050008 00000001 0000011C 80008000 .... .... .... ....00000040: 80008000 00628A44 00650EEC 00000007 .... .b.D .e.l ....00000050: 0000011C 0000001B 00000001 00000006 .... .... .... ....00000060: 80008000 0000011C 00004000 00000000 .... .... ..@. ....00000070: 00000000 00000008 00000000 00000021 .... .... .... ...!00000080: 00000001 00000002 8000C000 0000411C .... .... ..@. ..A.00000090: 00000700 00000000 00000000 00000004 .... .... .... ....000000A0: 00000000 00000029 00000001 00000003 .... ...) .... ....000000B0: 8000C700 0000481C 00000380 00000000 ..G. ..H. .... ....000000C0: 00000000 00000004 00000000 0000002F .... .... .... .../000000D0: 00000001 10000003 8000CA80 00004B9C .... .... ..J. ..K.000000E0: 00000020 00000000 00000000 00000008 ... .... .... ....000000F0: 00000000 0000002F 00000001 10000003 .... .../ .... ....00000100: 8000CAA0 00004BBC 00623FA4 00000000 ..J ..K< .b?$ ....00000110: 00000000 00000008 00000000 3C1C8001 .... .... .... <...00000120: 679C4A80 3C018001 AC3DC70C 3C018001 g.J. <... ,=G. <...00000130: AC3FC710 3C018001 AC24C714 3C018001 ,?G. <... ,$G. <...00000140: AC25C718 3C018001 AC26C71C 3C018001 ,%G. <... ,&G. <...00000150: AC27C720 3C018001 AC30C724 3C018001 ,'G <... ,0G$ <...00000160: AC31C728 3C018001 AC32C72C 3C018001 ,1G( <... ,2G, <...--More-- qDisplaying Geometry and Format Information (Class C Only)
To display the geometry and format information of a CF memory card formatted with a Class C flash file system, enter the show flash: filesys command in privileged EXEC mode:
Router# show flash: filesys******** ATA Flash Card Geometry/Format Info ********ATA CARD GEOMETRYNumber of Heads: 4Number of Cylinders 490Sectors per Cylinder 32Sector Size 512Total Sectors 62720ATA CARD FORMATNumber of FAT Sectors 31Sectors Per Cluster 8Number of Clusters 7796Number of Data Sectors 62560Base Root Sector 155Base FAT Sector 93Base Data Sector 187Deleting Files
To delete a file from a CF memory card, enter the delete flash: command.
If you are using a Class B flash file system, after you enter the delete flash: command, the memory space of the deleted file remains occupied, although the deleted file cannot be recovered. To reclaim the memory space occupied by a deleted file, enter the squeeze flash: command, in privileged EXEC mode.
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Deleting a File from a CompactFlash Memory Card with a Class B Flash File System: Example
In the following example, the file c28xx-i-mz.tmp is deleted from the external CF memory card:
Router# delete flash:c28xx-i-mz.tmpDelete filename [c28xx-i-mz.tmp]?Delete flash:c28xx-i-mz.tmp? [confirm]Because the file was deleted, it does not appear when you enter the dir flash: command:
Router# dir flash:Directory of flash:/1580 -rw- 6462268 Mar 06 2004 06:14:02 c28xx-i-mz.3600ata3 -rw- 6458388 Mar 01 2004 00:01:24 c28xx-i-mz63930368 bytes total (51007488 bytes free)However, if you are using a Class B file system, because the deleted file's memory space has not yet been reclaimed, the deleted file is listed when you enter the show flash: command:
Router# show flash:Flash Compact Flash directory:File Length Name/status1 6458208 c28xx-i-mz.tmp [deleted]2 6458208 c28xx-i-mz[12916544 bytes used, 3139776 available, 16056320 total]15680K bytes of ATA Compact Flash (Read/Write)To reclaim the memory space of deleted files, enter the squeeze flash: command:
Router# squeeze flash:Squeeze operation may take a while. Continue? [confirm]squeeze in progress...sssssssssssssssssssssssseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeRebuild file system directory...Squeeze completeRenaming Files
To rename a file on a CF memory card, enter the rename command in privileged EXEC mode:
Router# dir flash:Directory of flash:/3 -rw- 6458388 Mar 01 2004 00:00:58 c28xx-i-mz.tmp1580 -rw- 6462268 Mar 06 2004 06:14:02 c28xx-i-mz.3600ata63930368 bytes total (51007488 bytes free)Router# rename flash:c28xx-i-mz.tmp flash:c28xx-i-mzDestination filename [c28xx-i-mz]?Router# dir flash:Directory of flash:/1580 -rw- 6462268 Mar 06 2004 06:14:02 c28xx-i-mz.3600ata3 -rw- 6458388 Mar 01 2004 00:01:24 c28xx-i-mz63930368 bytes total (51007488 bytes free)Directory Operations on a CompactFlash Memory Card
Directory operations vary according to the formatted file system—Class B or Class C.
The following sections describe directory operations for external CF memory cards on Cisco routers:
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Entering a Directory and Determining Which Directory You Are In
To enter a directory of a CF memory card, enter the cd command in privileged EXEC mode. The cd command specifies or changes the default directory or file system. If you enter cd only, without specifying a file system, the router enters the default home directory, which is flash.
Router# cdTo determine which directory you are in, enter the pwd command in privileged EXEC mode. The CLI displays which directory or file system is specified as the default by the cd command.
Router# pwdflash:To display a list of files in the directory that you are in, enter the dir command in privileged EXEC mode. The command-line interface will display the files in the file system that was specified as the default by the cd command.
Router# dirDirectory of flash:/1580 -rw- 6462268 Mar 06 2004 06:14:02 c28xx-i-mz.3600ata3 -rw- 6458388 Mar 01 2004 00:01:24 c28xx-i-mz63930368 bytes total (51007488 bytes free)Entering a Directory: Example
To enter the /config directory:
Router# cd configTo verify that you are in the /config directory:
Router# pwdflash:/config/Router# dirDirectory of flash:/config/380 -rw- 6462268 Mar 08 2004 06:14:02 myconfig1203 -rw- 6458388 Mar 03 2004 00:01:24 myconfig263930368 bytes total (51007488 bytes free)Creating a New Directory
To create a directory in flash memory, enter the mkdir flash: command in privileged EXEC mode.
Creating a New Directory: Example
In the following example, a new directory named "config" is created; then a new subdirectory named "test-config" is created within the "config" directory.
Router# dir flash:Directory of flash:/1580 -rw- 6462268 Mar 06 2004 06:14:02 c28xx-i-mz.3600ata3 -rw- 6458388 Mar 01 2004 00:01:24 c28xx-i-mz63930368 bytes total (51007488 bytes free)Router# mkdir flash:/configCreate directory filename [config]?Created dir flash:/configRouter# mkdir flash:/config/test-configCreate directory filename [/config/test-config]?Created dir flash:/config/test-configRouter# dir flash:Directory of flash:/3 -rw- 6458208 Mar 01 2004 00:04:08 c28xx-i-mz.tmp1580 drw- 0 Mar 01 2004 23:48:36 config128094208 bytes total (121626624 bytes free)Removing a Directory
To remove a directory in flash memory, enter the rmdir flash: command in privileged EXEC mode.
Before you can remove a directory, you must remove all files and subdirectories from the directory.
Example: Removing a Directory
In the following example, the subdirectory test-config is removed.
Router# dirDirectory of flash:/config/1581 drw- 0 Mar 01 2004 23:50:08 test-config128094208 bytes total (121626624 bytes free)Router# rmdir flash:/config/test-configRemove directory filename [/config/test-config]?Delete flash:/config/test-config? [confirm]Removed dir flash:/config/test-configRouter# dirDirectory of flash:/config/No files in directory128094208 bytes total (121630720 bytes free)
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