CHKDSK:

CHKDSK is a command used on computers running DOS, OS/2 and Microsoft Windows operating systems that displays the file system integrity status of hard disks and floppy disk and can fix logical file system errors. It is similar to the fsck command in Unix.

Chkdsk (Chkdsk.exe) is a command-line tool that checks volumes for problems. The tool then tries to repair any that it finds. For example, Chkdsk can repair problems related to bad sectors, lost clusters, cross-linked files, and directory errors. To use Chkdsk, you must log on as an administrator or as a member of the Administrators group.

Syntax

chkdsk [volume:][[Path] FileName] [/f] [/v] [/r] [/x] [/i] [/c] [/l[:size]]

Parameters -

volume: : Specifies the drive letter (followed by a colon), mount point, or volume name.

[Path] FileName : Specifies the location and name of a file or set of files that you want chkdsk to check for fragmentation. You can use wildcard characters (that is, * and ?) to specify multiple files.

/f : Fixes errors on the disk. The disk must be locked. If chkdsk cannot lock the drive, a message appears that asks you if you want to check the drive the next time you restart the computer.

/v : Displays the name of each file in every directory as the disk is checked.

/r : Locates bad sectors and recovers readable information. The disk must be locked.

/x : Use with NTFS only. Forces the volume to dismount first, if necessary. All open handles to the drive are invalidated. /x also includes the functionality of /f.

/i : Use with NTFS only. Performs a less vigorous check of index entries, reducing the amount of time needed to run chkdsk.

/c : Use with NTFS only. Skips the checking of cycles within the folder structure, reducing the amount of time needed to run chkdsk.

/l[:size] : Use with NTFS only. Changes the log file size to the size you type. If you omit the size parameter, /l displays the current size.

/?: Displays help at the command prompt.

Run CHKDSK to check for disk errors