The changing Fedora

[Greg Woods]

On Tue, 2013-01-22 at 12:12 +0100, Reindl Harald wrote:
> 

> one reason more to have one priamry OS and use virtualization
> for anything else 

There are some cases where this doesn't work. One I know of is
commercial games under Windows. Some of them just do not work when
Windows is running in a VM. 

I have been told (and I don't know if it's true but it makes sense) that
this is because of copy protection. The game CD has some stuff written
beyond the "end" of the disc. Low-level system calls can read this, but
a normal user space disc copy doesn't, so the software can tell when it
loads whether or not this is the original CD or a copy. Since the
hypervisor doesn't implement reading beyond the end of the disc, the
games won't load even with the original CD when running in a VM.

As I said, I don't know if this explanation is correct, but I do know
that some of my games will not load when running in a VM, so I have to
have a native Windows boot.

--Greg