I've got a problem installing my Hack OS X 1.7.2
I boot my notebook with iBoot and choose the usb drive with dmg/iso file on it. If iso or dmg, everytime the same problem:
Sometimes the notebook shut down and restart and sometimes there is a screen with an dark grey apple on it. I've waited vor 40 minutes, but it was still there.

So, what can I do?

Sorry for my bad english and
thanks for answers