Hi, I installed Micrsoft Virtual PC 6.0.156. on window XP OS, currently 3 hard disk are enabled, i need to add one more hard disk on the virtual PC. If any one know please advice on this. I am attaching my setting of virtual PC for reference. Hard disk 1 - Window Server 2003 Hard disk 2 - bi.vhd Hard disk 3 - hyp.vhd I need to add one more Hard disk 4 and enable - fm.vhd Thanks in advance, senthil