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BIOS Question: PNP OS Yes/No

S

SarverSystems

Supreme [H]ardness
Joined
Feb 9, 2002
Messages
7,408
On some systems, if I choose YES, all is well. On others, it isn't.

Can someone explain it?
 
On systems with a plug and play operating system (XP, 2000, many linux distro's, etc.) choose "yes" otherwise choose "no".
That is really all there is to it.
What has you confused, SarverSystems?
 
99.9% of my systems are XP systems, the others a repaired Win98 machines. Even on systems with fresh installs of XP, if I choose yes, sometimes it doesn't boot up.

I guess my question is: What EXACTLY does it do? I mean, why does the BIOS care what OS is being installed, much less if it is PnP or not.
 
Essentially, it means the OS assigns resources for your hardware. IRQ's, DMA and the like. The BIOS will assign these if that option is turned off. That setting really won't matter if you're using an OS that supports PnP. It can cause problems if you are using an OS that does not support PnP, like Windows NT 4.0. Sadly, we still use it where I work. Once, my supervisor was trying to install a NIC in NT 4.0 and it wasn't working. I went into the BIOS and set that option to no. The NIC worked like a charm afterwards.
 
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