Hi! I'm glad that here's people with p52 laptops
I've tried to install Mac OS a lot, but every time I stuck with same errors.
Everything installs correctly but at first boot (I used -x and -v few times) I get this:

Fire-wire is unable to determine security-mode; defaulting to the full-secure
...it hangs for about 3 mins and then reports:
Still waiting for root device
Still waiting for root device
Still waiting for root device
...

How can get this fixed? Have you ever met this bug?

Thanks.