I previously used iAtkos ML2 to install Mac OS X (Mountain Lion) on my computer, and when booting iAtkos from USB I used the boot flag -s for it to work. Everything was working perfectly, though to boot Mac I had to insert a USB with iAtkos installed on it and boot from there. I tried to fix this by installing bootloaders.(I also had Windows 7 on another partition which would boot if the USB wasn't inserted) Then Mac wouldn't boot even with the USB inserted. So, I formatted the Mac partition and tried to boot the iAtkos installer again, though when I booted with the boot flag -s, after typing exit when prompted it would get stuck at "logout". If I do not use the boot flag -s it gets stuck at the apple logo (previously it had a cancel logo on the apple logo, though now it doesn't stop loading).
My computer model and specs:
HP Compaq 8510w
Intel Core 2 Duo T7500 @ 2.20Ghz
Nvidia Quadro FX 570M
Wi-Fi Adapter - Intel Wireless Wi-Fi Link 4965agn