Change CHKDSK countdown time

When you schedule CHKDSK to run at the next boot, the system will
prompt you to press a key to cancel the operation while CHKDSK is
 running.
One option for CHKDSK is the use of the Command-line/R parameter, which allows the program to repair damage it finds on the hard drive.
The system will display a countdown during that cancel
 period. The default value is 10 seconds.
















  To Change this open up Regedit  and locate:
" HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager
\AutoChkTimeOut "

You can change the value to anything from zero to 259,200 seconds (3 days).
With a timeout of zero, there is no countdown and you cannot cancel the operation