I have installed iatkos on my pc..i've tried to plug my ovation external drive it works even my flashdrive..afterwards i tried to fix my video driver and added my graphic card using EFI studio then when i rebooted i connected my external it won't mount, it does not appear in disk utility even in system profiler...i tried my external drive and flash drive in my office with a mac os x86 it does mount and its working...then when i went home i booted my pc to windows(because i have two hard drive one with windows and the other is a mac osx86) my external and usb flash drive works on windows..i tried it again in mac os it wont really mount.. but my usb optical mouse works!!! i wonder what is wrong..pls i need your help..Thanks!!!