Hello, i had installed snow leopard 10.6.3 retail using UnibootX, after that i have upgraded system to 10.6.8. And now system is not running.
I got this:

1. Toshiba Satellite A660-1H6
2. DualCore Intel Core i3 540M, 2533 MHz SSE SSE2 SSE3 SSSE3 SSE4.1 SSE4.2
3. 5 Series/3400 Series Chpset Family 4
5. NVIDIA GeForce 310M 512MV, Intel HD Graphics
6. Realtek High Definition Audio (Vendor ID: 10EC Device ID: 0269)
7. LAN RTL8139/810x
8. WiFi Broadcom 802.11n