Scandisk command line switches

If you want to schedule the checking of your HDD, then use these command line switches:

Scandisk (Dos):

drive: - Drive letter of disk you want to scan.
/A or /ALL - Scans all local, non-removable hard drives.
/Autofix - Fixes damages without prompting.
/Checkonly - Tests for errors but doesn’t make any changes.
/Custom - Configures and runs Scandisk according to the Scandisk.ini file settings.
/Nosave - With /autofix, deletes lost clusters rather than saving as files.
/Nosummary - With /checkonly or /autofix, it skips summary screen.
/O - Undocumented, deletes all long file entries only leaving the 8.3 filename (Dangerous)
/Surface - Performs a surface scan after other checks.
/mono - Configures Scandisk for use with monochrome display.

Scandskw (Windows 9x): - drive: - Drive letter of disk you want to scan

/Allfixeddisks - Scan all local, non-removable hard drives
/Noninteractive - Runs scandisk without requiring user input
/Preview - Preview tests for errors but doesn’t make any changes
/Oldfs - Undocumented, deletes all long file entries only leaving the 8.3 filename (Dangerous)
/Silent - Doesn’t display summary screen
/Sageset:x - Used to create a profile (x is a number from 0-65535)
/Sagerun:x - Used to execute a created profile (x is a number from 0-65535)