When UAC is enabled on Windows 7 or Vista you need to elevate the command prompt to succesfully run the CHKDSK command.
- Click > Start > All Programs > Accessories
- Right Click on “Command Prompt” and choose “Run as Administrator”
- Say Yes when prompted by User Account Control
- From the command prompt enter the normal CHKDSK C: /R command
Last Reviewed: 23/12/2014