Ghost to usb drive.

Had problems trying to create a ghost image on a new Dell machine which only has usb ports (no ps2 ports for mouse and keyboard) to a usb hard disk. When the drivers for the disk were loaded, the mouse and keyboard were disabled. Removing the aspiehci.sys from loading in config.sys by pressing F8 at the Starting PCDos prompt and answering No to the initial question I had a ghost program with mouse and keyboard support.
However, ghost complained with error 622 – Cannot create image file. By going into the bios and setting the SATA controller to run in compatible mode rather than normal, Ghost worked – or at least it is currently creating an image for me.