hard disk dirver

[Greg Freemyer]

On Wed, Feb 6, 2013 at 12:50 PM, <Valdis.Kletnieks at vt.edu> 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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