On Wed, Feb 6, 2013 at 12:50 PM, <[email protected]> wrote: > On Wed, 06 Feb 2013 13:21:17 +0800, horseriver said: > > At booting stage,kernel need to detect the hard device before mount > it, > > does this work need pci's surport? > > That depends. Is the controller for the hard drive a PCI-based > controller? On > most x86-based boxes, it is (and I'm not sure it's even possible to build > an > x86 kernel that doesn't have PCI as a =y in the config). However, very old > units may still have ISA based disk controllers, and other archs may have > other > I/O buses.
Most new MB's have a SATA controller directly on the MB connected directly to either the North or South bridge (I don't know which). I don't think any PCI is support needed to talk to the boot disk. Greg
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