Displays or modifies the checking of disk at boot time. CHKNTFS volume [...] CHKNTFS /D CHKNTFS /T[:time] CHKNTFS /X volume [...] CHKNTFS /C volume [...] volume Specifies the drive letter (followed by a colon) mount point or volume name. /D Restores the machine to the default behavior; all drives are checked at boot time and chkdsk is run on those that are dirty. /T:time Changes the AUTOCHK initiation count down time to the specified amount of time in seconds. If time is not specified displays the current setting. /X Excludes a drive from the default boot-time check. Excluded drives are not accumulated between command invocations. /C Schedules a drive to be checked at boot time; chkdsk will run if the drive is dirty. If no switches are specified CHKNTFS will display if the specified drive is dirty or scheduled to be checked on next reboot.