The Integrated File System Configuration Guide, Cisco IOS Release 15M&T
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- Updated:
- November 30, 2012
Chapter: File System Check and Repair for PCMCIA ATA Disks
File System Check and Repair for PCMCIA ATA Disks
The File System Check and Repair for PCMCIA ATA Disks feature introduces a File-System-Check (fsck) utility in Cisco IOS software for File Allocation Table (FAT) filesystems on (Personal Computer Memory Card International Association) PCMCIA disks. The utility performs functions such as checking the boot sector and partition table, checking the file and directory structure, reclaiming unused disk space, and updating the FAT file structure.
- Finding Feature Information
- Information About File System Check and Repair for PCMCIA ATA Disks
- How to Use the File System Check and Repair for PCMCIA ATA Disks
- Additional References
- Feature Information for File System Check and Repair for PCMCIA ATA Disks
Finding Feature Information
Your software release may not support all the features documented in this module. For the latest caveats and feature information, see Bug Search Tool and the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the feature information table.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.
Information About File System Check and Repair for PCMCIA ATA Disks
File System Check and Repair for PCMCIA ATA Disks Overview
Prior to the introduction of the file system check (fsck) utility in Cisco IOS Release 12.2(13)T, corrupt files could not be removed from Advanced Technology Attachment (ATA) disks using the Cisco IOS command-line interface (CLI).
Files (or file metadata) in an ATA disk can be corrupted by a variety of events, from power failures or system crashes to simple TFTP copy failures. Prior to the introduction of the file system check (fsck) utility, corrupted files could not be deleted from a usable ATA disk without removing, reformatting, and reinstalling the disk.
Thefsck privileged EXEC command allows you to conveniently recover wasted disk space directly from the CLI.
 Note | A FAT16 formatted disk can have only 512 root directory entries. This limits the maximum number of files stored under the root directory. The number of root directory entries stored by a file is in proportion to the filename length. A FAT32 formatted disk does not have this root directory entry limitation. A subdirectory of a FAT16 or FAT32 formatted disk also does not have any limitation on the maximum number of files stored in it. |
How to Use the File System Check and Repair for PCMCIA ATA Disks
The fsck utility is enabled by default. No configuration is necessary. For more information, see the fsck command page.
Additional References
The following sections provide references related to the File System Check and Repair for PCMCIA ATA Disks feature.
Related Documents
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Related Topic |
Document Title |
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Cisco IOS commands |
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Configuration fundamental commands |
Cisco IOS Configuration Fundamentals Command Reference |
Technical Assistance
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Description |
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Feature Information for File System Check and Repair for PCMCIA ATA Disks
The following table provides release information about the feature or features described in this module. This table lists only the software release that introduced support for a given feature in a given software release train. Unless noted otherwise, subsequent releases of that software release train also support that feature.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.|
Feature Name |
Releases |
Feature Information |
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File System Check and Repair for PCMCIA ATA Disks |
12.0(22)S 12.2(13)T |
This feature introduces a File-System-Check (fsck) utility in Cisco IOS software for FAT filesystems on PCMCIA disks. The utility performs functions such as checking the boot sector and partition table, checking the file and directory structure, reclaiming unused disk space, and updating the FAT file structure. The following command was introduced or modified: fsck. |
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