what is the first file used in the boot process of windows vista
Windows Vista startup process In this article, unless otherwise specified, what is said about "Windows Vista" also applies to all later NT operating systems. For Windows Vista, the boot sector loads the Windows Boot Manager (a file named BOOTMGR on either the system or the boot partition), accesses the Boot Configuration Data store and uses the information to load the operating system. Then, the BCD invokes the boot loader and in turn proceeds to initiate the Windows kernel.
System Restore Windows XP stores restore-point files in a hidden folder named "System Volume Information" on the root of every drive, partition or volume, including most external drives and some USB flash drives.[3]