Seagate BlackArmor NAS 110 User Manual page 130

pci=bios
Forces to use PCI BIOS, and not access the hardware device directly. For instance,
this parameter may be used if the machine has a non-standard PCI host bridge.
pci=nobios
Disallows use of PCI BIOS; only direct hardware access methods are allowed. For
instance, this parameter may be used if you experience crashes upon boot-up,
probably caused by the BIOS.
pci=biosirq
Uses PCI BIOS calls to get the interrupt routing table. These calls are known to be
buggy on several machines and they hang the machine when used, but on other
computers it is the only way to get the interrupt routing table. Try this option, if the
kernel is unable to allocate IRQs or discover secondary PCI buses on your
motherboard.
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