Re: [RFC] Restoring HDIO_GETGEO semantics (was: Re: workaround for BIOS / CHS stuff)

[Patrick J. LoPresti]

Andries Brouwer <Andries.Brouwer@xxxxxx> writes:

> (ii) Various people talk about moving disks between machines.
> Such people have not understood the main fact here:
> the geometry is not a property of the disk but of the BIOS.

Um...  Yes, right, exactly, very good.  So you *must* obtain the
geometry from the BIOS and not from anything you happen to find on the
disk.  Which is sort of my entire point.

> It is futile to hope for a construction that will work across
> different machines with different BIOSes.

Simply false.  "modprobe edd.o" followed by an examination of the
fields under /sys/firmware/edd will give you precisely the right
values.

 - Pat
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