iPC OSx86 won't boot (halts at USBF lines)

[RELOAD911]

Hey there, I'm trying to install Mac OS X from iPC OSx86 Universal DVD (with PPF5 I suppose). I've managed to install the actual system, but it won't boot, saying the following:

USBF: 0.771 AppleUSBOHCI[hex]::CheckSleepCapability - controller will be unloaded across sleep
USBF: 0.773 AppleUSBOHCI[hex]::CheckSleepCapability - controller will be unloaded across sleep
USBF: 0.775 AppleUSBOHCI[hex]::InitializeOperationalRegisters Non-NULL hcDoneHead: [hex]

And that's it, it keeps writing "Still waiting for root device" at this point. Please help, I've tried booting with -v -f but no result so far. Thanks in advance!