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This chapter describes how to how to use the Flash file system.
This chapter consists of these sections:
The Flash file system provides a number of useful commands to help you manage system image and configuration files.
The Flash file system on the Supervisor Engine III, the RSM, and the Catalyst 2926G series switches consists of three Flash devices on which you can store system files:
On the Supervisor Engine II G, III F, and III G, and on the Catalyst 4000 and 2948G series switches, there is only one flash device, bootflash:.
These sections describe how to work with the Flash file system:
When you set the default Flash device for the system, the default device is assumed when you enter a Flash file system command without specifying the Flash device.
To set the default Flash device, perform this task:
| Task | Command |
|---|---|
Step 1 Set the default Flash device for the system. | cd [[m/][bootflash: | slot0: | slot1:]] |
Step 2 Verify the default Flash device for the system. | pwd [mod_num] |
This example shows how to change the default Flash device to slot0: and verify the default device:
Console> (enable) cd slot0: Console> (enable) pwd slot0 Console> (enable)
To list the files on a Flash device, perform one of these tasks:
| Task | Command |
|---|---|
| dir [[m/]device:][filename] |
| dir [[m/]device:][filename] deleted |
| dir [[m/]device:][filename] all |
| dir [[m/]device:][filename] long |
This example shows how to list the files on the default Flash device:
Console> (enable) dir -#- -length- -----date/time------ name 4 3134688 Apr 27 1998 08:27:01 cat5000-sup3.4-1-0-66.bin 5 3231989 Jun 24 1998 12:04:40 cat5000-sup3.4-2-0-28.bin 6 135 Jul 17 1998 11:30:05 dns_config.cfg 1213952 bytes available (6388224 bytes used) Console> (enable)
This example shows how to list the files on a Flash device other than the default device:
Console> (enable) dir slot0: -#- -length- -----date/time------ name 1 3209261 Jun 16 1998 13:18:19 cat5000-sup3.4-2-1.bin 2 135 Jul 17 1998 11:32:53 dns-config.cfg 3 3231989 Jul 17 1998 16:54:23 cat5000-sup3.4-1-2.bin 4 8589 Jul 17 1998 17:02:52 5000_config.cfg 9933504 bytes available (6450496 bytes used) Console> (enable)
This example shows how to list the deleted files on the default Flash device:
Console> (enable) dir deleted -#- ED --type-- --crc--- -seek-- nlen -length- -----date/time------ name 1 .D ffffffff 81a027ca 41bdc 22 7004 Apr 01 1998 15:27:45 5002.config. 4.1.98.cfg 2 .D ffffffff ccce97a3 43644 23 6630 Apr 01 1998 15:36:47 5002.default .config.cfg 3 .D ffffffff 81a027ca 45220 15 7004 Apr 19 1998 10:05:59 5002_config. cfg 1213952 bytes available (6388224 bytes used) Console> (enable)
To copy a file, perform one of these tasks in privileged mode:
| Task | Command |
|---|---|
| copy file-id {tftp | flash | file-id | config} |
| copy tftp {flash | file-id | config} |
| copy flash {tftp | file-id | config} |
| copy config {flash | file-id | tftp} |
This example shows how to copy a file from the default Flash device to another Flash device:
Console> (enable) copy cat5000-sup3.4-2-1.bin slot0: 13174216 bytes available on device slot0, proceed (y/n) [n]? y CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC CCCCCCCCCCCCCCCCCCcccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc ccccccccccccCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC CCCCCCCCCCCCCCCCCCCCCCCCCCCCCC File has been copied successfully. Console> (enable)
This example shows how to copy a file from a TFTP server to the running configuration:
Console> (enable) copy tftp config IP address or name of remote host []? 172.20.52.3 Name of file to copy from []? dns_config.cfg Configure using tftp:dns_config.cfg (y/n) [n]? y / Finished network download. (135 bytes) >> >> set ip dns server 172.16.10.70 primary 172.16.10.70 added to DNS server table as primary server. >> set ip dns server 172.16.10.140 172.16.10.140 added to DNS server table as backup server. >> set ip dns enable DNS is enabled >> set ip dns domain corp.com Default DNS domain name set to corp.com Console> (enable)
This example shows how to download a configuration file from a TFTP server for storage on a Flash device:
Console> (enable) copy tftp flash IP address or name of remote host []? 172.20.52.3 Name of file to copy from []? dns-config.cfg Flash device [slot0]? Name of file to copy to [dns-config.cfg]? 9932056 bytes available on device slot0, proceed (y/n) [n]? y / File has been copied successfully. Console> (enable)
This example shows how to copy the running configuration to Flash memory:
Console> (enable) copy config flash Flash device [bootflash]? slot0: Name of file to copy to []? 5000_config.cfg Upload configuration to slot0:5000_config.cfg 9942096 bytes available on device slot0, proceed (y/n) [n]? y ..... .......... ....... .......... ........... .. Configuration has been copied successfully. Console> (enable)
This example shows how to upload a configuration file on a Flash device to a TFTP server:
Console> (enable) copy slot0:5000_config.cfg tftp IP address or name of remote host []? 172.20.52.3 Name of file to copy to [5000_config.cfg]? / File has been copied successfully. Console> (enable)
| Caution If you enter the squeeze command on a Flash device, you cannot restore files that you deleted on that device before you entered the squeeze command. |
To delete files on a Flash device, perform this task in privileged mode:
| Task | Command |
|---|---|
Step 1 Delete a file on a Flash device. | delete [[m/]device:]filename |
Step 2 If desired, permanently remove all deleted files on the Flash device (this operation can take a number of minutes to complete). | squeeze [m/]device: |
Step 3 Verify the files are deleted. | dir [[m/]device:][filename] |
This example shows how to delete a file from a Flash device:
Console> (enable) delete dns_config.cfg Console> (enable)
This example shows how to permanently remove all deleted files from a Flash device:
Console> (enable) squeeze slot0: All deleted files will be removed, proceed (y/n) [n]? y Squeeze operation may take a while, proceed (y/n) [n]? y Erasing squeeze log Console> (enable)
You must specify the index number of a deleted file to identify the file to undelete. The index number for each file appears in the first column of the dir command output. A file cannot be undeleted if a valid file with the same name already exists. Instead, you must delete the existing file and then undelete the desired file. A file can be deleted and undeleted up to 15 times.
To restore deleted files on a Flash device, perform this task in privileged mode:
| Task | Command |
|---|---|
Step 1 Identify the index number of the deleted files on the Flash device. | dir [[m/]device:][filename] deleted |
Step 2 Undelete a file on a Flash device. | undelete index [[m/]device:] |
Step 3 Verify that the file is restored. | dir [[m/]device:][filename] |
This example shows how to restore a deleted file:
Console> (enable) dir deleted -#- ED --type-- --crc--- -seek-- nlen -length- -----date/time------ name 6 .D ffffffff 42da7f71 657a00 14 135 Jul 17 1998 11:30:05 dns_config.cfg 1213952 bytes available (6388224 bytes used) Console> (enable) undelete 6 Console> (enable) dir -#- -length- -----date/time------ name 4 3134688 Apr 27 1998 08:27:01 cat5000-sup3.4-1-0-66.bin 5 3231989 Jun 24 1998 12:04:40 cat5000-sup3.4-2-0-28.bin 6 135 Jul 17 1998 11:30:05 dns_config.cfg 1213952 bytes available (6388224 bytes used) Console> (enable)
To verify the checksum of a file on a Flash device, perform this task in privileged mode:
| Task | Command |
|---|---|
Verify the checksum of a file on a Flash device. | verify [[m/]device:] filename |
This example shows how to verify the checksum of a file:
Console> (enable) verify cat5000-sup3.4-2-1.bin CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC CCCCCCCCCCCCCCC File bootflash:cat5000-sup3.4-2-1.bin verified OK Console> (enable)
Before you use a new Flash device, you must format it. You can reserve up to 16 spare sectors for use when other sectors fail (by default, none are reserved). If you do not reserve spare sectors and later some sectors fail, you will have to reformat the entire Flash memory, erasing all existing data.
When you format a Flash device, you can specify the monlib file (the ROM monitor library), which the ROM monitor uses to access files in the Flash file system. The monlib file is also compiled into the system image.
In the format command syntax, use the device2 argument to specify the device that contains the monlib file to use. If you omit the entire device2 argument, the system formats the device using the monlib file that is bundled with the system software.
If you omit just the device name (device2) from the [[device2:][monlib-filename]] argument, the system formats the device using the named monlib file from the default Flash device. If you omit the monlib-filename from the [[device2:][monlib-filename]] argument, the system formats the device using the monlib file from device2.
If you specify the entire [[device2:][monlib-filename]] argument, the system formats the device using the specified monlib file from the specified device. If the system cannot find a monlib file, it terminates the formatting process.
To format a Flash memory device, perform this task in privileged mode:
| Task | Command |
|---|---|
Format a Flash memory device. | format [spare spare-number] [m/]device1: [[device2:] [monlib-filename]] |
This example shows how to format the Flash device in slot1:
Console> (enable) format slot1: All sectors will be erased, proceed (y/n) [n]?y Enter volume id (up to 31 characters): Formatting sector 1 Format device slot1 completed. Console> (enable)
Posted: Mon Jul 19 13:03:04 PDT 1999
Copyright 1989-1999©Cisco Systems Inc.
