Comment 3 for bug 159397

My bet would be on the fact that IDE devices are mapped as SATA and the kernel is compiled with CONFIG_IDE_MAX_HWIFS=4 and your card has 4 ports + the IDE hard drive and this might explain why you cannot see your first 2 ports (mapped over by the IDE channel?) I would place a good bet on it that if you change the value of CONFIG_IDE_MAX_HWIFS to "8" and recompile your kernel all your problems would automagically dissappear. This low value is a joke with todays hardware and even the server install, where you would expect to find a large # of drives installed in a single computer, defaults to only 4.