On Thu, Jul 26, 2012 at 11:29:40AM +0200, Davidlohr Bueso wrote:
> > (a) where fdisk gets the information about the geometry from in this
> > specific case?
>
> fdisk gets the information from (i) user input, (ii) what the
> kernel/bios thinks the geometry is, with the HDIO_GETGEO ioctl and (iii)
> by inferring it from the partition table geometry.
BTW, does it make any sense to read the geometry from partition table
if the partition table has been aligned according to the device topology
(for example 1MiB offset and grain)?
> > fdisk even bother displaying a geometry any more ? Doesn't it just serve
> > to confuse?
IMHO for non-DOS compatible mode it would be better to ignore PT
geometry (read only info from kernel to have "some" values) and
don't display geometry in the default output, because it's completely
irrelevant.
The same we can do with -S -C -H options -- it would be better to
print a warning if the options are specified for non-DOS mode.
I still see on many places suggestions like "use -S -H to align your
flash disk" or so... all this is legacy.
Karel
--
Karel Zak <kzak@xxxxxxxxxx>
http://karelzak.blogspot.com
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