Ok, sorry. It's about HDD. After installing mac os x on hard drive when it has to reboot in order to complete the installation I have to use usb to boot then I should choose HDD to complete installation. And that's the point when I'm choosing HDD to complete the installation I got error mach kernel not found. If I then complete installation using usb and afterward I install chameleon on HDD on rebooting I got this no boot device found. I think it has something to do with this kernel which can't be found.