# Linux fdisk -l /dev/sda diskpart list disk list partition

chkdsk C: /f /r

bootrec /fixmbr # Rewrites MBR code (does not modify partition table) bootrec /fixboot # Writes new boot sector onto the system partition bootrec /rebuildbcd # Rebuilds Boot Configuration Database

fdisk /dev/sda # Use 'a' to toggle active flag on the correct partition