I can only boot in safe mode -x

[julcat]

Hello i have just install iboot and macos 10.6.3 but the only way i can boot is with the -x option, my motherboard is an Intel 975BXB, installed multibeast and get iboot0 error so i have to boot with the iboot disk and -x option,thank for your help, totally newbie here

 

[julcat]

My graphic card is a ATI radeon HD 2600 XT, do i need a software update???