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SubjectRe: [PATCH] Large "clipped" IDE disk support for 2.4 when using old BIOS
On Sun, 19 Nov 2000, Andre Hedrick wrote:

> On Mon, 20 Nov 2000, Dan Aloni wrote:
>
> > Well, I could patch it so it adds that one sector ;-) But that's not the
> > right way. The true number of sectors is 90069840, since 90069839 doesn't
> > divide by the number of *real* heads (6) and the number of recording zones
> > (15). So it needs fixing.
>
> 15 == 16 if 0 == 1 in realm of counting numbers.
>
> Also geometry is a lie to begin with, so what is one more lie on top of
> another?

These are real values, IBM:

http://www.storage.ibm.com/hardsoft/diskdrdl/desk/ds75gxp.htm

Let's try to read from the 90069840th sector:

# dd if=/dev/hdc of=/dev/null bs=512 count=1 skip=90069839
1+0 records in
1+0 records out

Walla. ;-)

--
Dan Aloni
dax@karrde.org

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