When one of my RH9 boxes boots, there is a long pause at the serial ata
devices, which are turned off in the BIOS, but RH9 seems to discover
them anyway. Here is what dmesg gives:
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SiI3112 Serial ATA: chipset revision 1
SiI3112 Serial ATA: not 100% native mode: will probe irqs later
, BIOS settings: hde:pio, hdf:pio
, BIOS settings: hdg:pio, hdh:pio