On Thu, 2004-07-22 at 14:52, Ian Blenke wrote:
> chris lee wrote:
>
> >if windows can boot multiple OS kernels on the same system at the same
> >time (NT Loader) and so can linux whats to stop someone from making a
> >co-op bootloader to run both linux and windows on the same system at
> >the same time?
> >
> Unfortunately, this isn't how it works.
>
> A bootloader is nothing more than a piece of code that loads another
> piece of code, usually off of some media or another.
>
> PC bloatloaders know how to "bootstrap" from BIOS boot and legacy x86
> real mode from the Master Boot Record (MBR) on your harddrive, loading
> code (namely the Linux kernel or Microsoft's HAL microkernel) that
> allows the CPU to go into protected mode and actually start to function.
> That is all they do. They are glorified program loaders.
>
> Bootstrapping is how a computer "boots" after turning itself on, through
> to when the OS is loaded and the system is usable.
>
> Running to Operating Systems simultaneously requires a hardware/CPU
> Virtualizer.
>
> You need something like:
>
> A host based CPU Virtualizer (Ring 0 shim):
> - VMWare
> - Virtual PC (for Windows)
> - Plex86
> - coLinux
> A Microkernel based virtualizer
> - Xen, etc.
> A CPU emulator
> - QEMU
> - Bochs
> - VirtualPC (for Mac)
>
> etc, etc.
>
> Hope this helps.
>
Nothing like cold hard facts to blast a dream into the next galaxy
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