arnd at arndb.de
Tue Oct 12 16:44:37 UTC 2010
On Tuesday 12 October 2010, Loïc Minier wrote:
> On Tue, Oct 12, 2010, Dave Martin wrote:
> > So we can make the /boot partition look like it has 63*255 geometry,
> > and we can make it start at sector offset 63.
> Right; ideally, we'd offset it so that it's still on a nice boundary
> e.g. we start at sector 512 (1, 8, 8)
IIRC, Windows uses 1MB partition alignment these days. It's probably
a good idea to do the same everywhere because SD card vendors might
decide to "optimize" for the common case.
> > Everything else can be determined based on sane absolute sector offsets.
> yup, using only sector offsets and not caring about chs
> > cat <<EOF | sfdisk --force -S$target_fake_spt -H$target_fake_heads -us "$device"
> > # --force is needed so that sfdisk accepts the non-cylinder aligned
> > partition boundaries.
I think --linux should allow you to do this as well without dropping all
the safety nets.
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