Well it depends, if you run Ntfs you can not...ntfs systems terminat the disk chain and make anything after it no acciable to boot from. But if you run Xp in Fat32 you can...i wouldent reccomend that considering that Ntfs is what makes Xp so smooth,stable and protected. If you want to Dual boot with Ntfs the fat32 system must be on the C: partition... -Drew