I was having a problem in start up my fedora 9 (system freeze). After googling, I entered the setting before os boot up and modified the kernel by adding:
iommu=noagp acpi=off noacpi and take off the "rhgb quiet" at the end and from then on I could successfully boot my fedora 9.
However, this change is not permanent. Every start up I have to make the change. Does anyone know where and which config file contain the kernel options that I can modify the above for good? Thanks much