Enabling BIOS options on a live server with no rebooting

timetobleed.com

23 pointsice7992 comments

This sets a configuration register in a chipset.

Changing bios options usually involves changing the nvram or flash data the bios maintains its settings in, that's a different thing altogether.

Indeed - but flipping the "DCA on" switch in the BIOS sets the bits in these registers.

So it is different, but it does the same thing.