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Checks a disk and displays a status report.

CHKDSK [volume[[path]filename]]] [/F] [/V] [/R] [/X] [/I] [/C] [/L[:size]]

volume          Specifies the drive letter (followed by a colon)

mount point
or volume name.
filename        FAT only: Specifies the files to check for fragmentation.
/F              Fixes errors on the disk.
/V              On FAT/FAT32: Displays the full path and name of every file
on the disk.
On NTFS: Displays cleanup messages if any.
/R              Locates bad sectors and recovers readable information
(implies /F).
/L:size         NTFS only:  Changes the log file size to the specified number
of kilobytes.  If size is not specified
displays current
/X              Forces the volume to dismount first if necessary.
All opened handles to the volume would then be invalid
(implies /F).
/I              NTFS only: Performs a less vigorous check of index entries.
/C              NTFS only: Skips checking of cycles within the folder

The /I or /C switch reduces the amount of time required to run Chkdsk by
skipping certain checks of the volume.