> When I reboot from CentOS to xp, the display card driver of windows xp > is broken. I guess if the display card is switched in the CentOS? > How to let these two system use the same display card? No change is made in the display card by an OS that will affect how the card works when you boot with another OS later. If XP doesn't work right, you might need a better software driver for that card for XP. It has nothing to do with CentOS. Whit