Load the disc since hard drive won't have one to get to the internet to download, you have to use disc drive
Most operating systems uses the boot partition to boot the computer. In some operating systems, both the system partition and the boot partition are used to boot up the system.
An operating system.
On MS platforms, the system partition is used to hold the boot files. The boot partition holds all the windows operating system files. Leave it to Microsuck to mis-lable the partition hiearchy. The system partition holds what is loaded and executed first after the computer runs through its preliminary BIOS boot sequence. It tells the computer where to start loading the operating system from; the boot partition. The boot partition is where all the program files (thousands of them) needed by the operating system are stored. If the system partition is deleted; the computer will not find the operating system. If the boot partition is deleted, again; the computer will not find the operating system.
The volume boot sector.
Boot Disk or Boot Floppy
The boot block of any OS contains the initial loading sequence of the Operating System. It starts the process of bringing into memory the first part of the Operating System which in turn brings the rest of it in for the entire boot process. This is known as bootstrapping the Operating System.
You can dual-boot virtually any operating system with Vista.
There is no uninstaller for an operating system. To remove an OS, simply format the partition that holds the operating system. If you use a boot manager to choose between different operating systems the software should automatically detect missing operating systems for you.
Basically you would need an operating system. To elaborate, you will need a bootable image that can be loaded by a bootloader.
When you don't have any operating system, the computer won't boot. You can only access BIOS setup or your boot-loader. In simple words, you can't do anything with it.
Boot volume
Boot sector