Using this on a computer with multiple drives or Multiflash card readers will not work. Run HPUSBFW.EXE Select your usb drive, and format in FAT! Fat16 is the only format that will work. Then run PTEDIT32.EXE Switch to your drive and change the boot hex to "80" This will set it to bootable. As in the picture Make SURE it is set to Fat16X Do not change anything else! If you need help refer to setbootable.jpg Then Save. Copy all contents of the XPUSB Folder to the Root of your USB Drive. Thats it Enjoy. :)