How can i change the drive letter of a drive?

[imported_myst]

Windows installed itself on F:

How can i change that to C?

 

[JBT]

Format. You can't change the drive letter of a system partition.
Next reinstall unplugg un needed drives.

 

[stevey5036]

this question was just on call for help, the only true solution is to reformat. theres no way to do it through windows or through the bios.