Re: Sendkey patch

[bitbucket]

On Wednesday 03 September 2008, Javier Martín wrote:
> El mié, 03-09-2008 a las 02:08 +0200, phcoder escribió:
> > Hello, again.
> >
> > Javier Martín wrote:
> > > We have 63 sectors = 32256 bytes (sectors range from 0 to 63 and the
> > > first is used by the MBR).
> >
> > I've just rechecked on my system. My first partition begins at sector
> > number 63. This is the value I've seen at most systems. So last usable
> > sector is 62. Sector 0 is MBR. So we have 62 sectors
>
> Oops, true! How strange. So there was no sector 63 in the CHS model and
> that is why the first sector of cyl 1 (the start of the first partition)
> is LBA 63... Does anyone know the historical reasons for this?

Well, the point is, in CHS addressing sector numbering starts with 1, not 0, 
and since there are only 6 bits available for the sector number (the other 2 
being used for cylinder number bits #8 and #9), the maximum number of sectors 
per track in CHS in 63.

Regards,
Niels