svn commit: r221972 - head/sys/geom/part

[Wilko Bulte]

Quoting Poul-Henning Kamp, who wrote on Mon, May 23, 2011 at 06:56:30AM +0000 ..
> In message <4DD9F0A3.701 at FreeBSD.org>, "Andrey V. Elsukov" writes:
> 
> >There is another opinion:
> >http://www.boot-us.com/gloss02.htm
> >
> >"There is the convention that partitions should always start and end on *=
> >cylinder boundaries*."
> 
> It is actually more weird than that:
> 
> The rule is that the starting or ending head of one of the four
> slices represent the number of heads used to access the drive, and
> ditto for sectors.
> 
> This "requirement" dates back to "smart" BIOS'es and ST-506 drives
> which couldn't ask the drive for its geometry.

WD1003 anyone?

Wilko