FreeBSD PNP OS = NO in system bios configuration?

Michael Madden madden at cmsrtp.com
Fri Dec 31 15:08:06 PST 2004


John Conover wrote:
> Should PNP OS = NO in the PC system bios configuration be used for
> freeBSD?
> 

I was reading through Michael Lucus's highly recommended
book 'Absolute BSD', and this is what is said on the matter:

"While you're in the system BIOS, set the "Plus and Play
OS" option to "no". This tells the BIOS to do some basic
hardware setup, rather than relying on the operating system
to do everything.  Modern versions of Microsoft Windows
expect the hard to do as it is told, and hence expect full
access to the hardware.  FreeBSD, on the other hand, expects
a system to perform as the hardware standards and specifications
demand, and hence can take advantage of some setup work that
is most easily done in the BIOS."

"Many devices (particularly network cards) will behave poorly
if you don't change this option."



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