Re: [RESEND] Hard disk LBA sector count is not always the same

[Petr Vandrovec <vandrove@vc.cvut.cz>]

DervishD wrote:
> > DervishD wrote:
> >
> > >   current capacity is 156299375
> > >   native capacity is 156301488
> >
> > Hard drives have a feature that can reserve a certain amount of space 
> > away from the user.
>
>
>     Yes, I know, but the problem is that 2.4 kernels *does* reserve
> that space but 2.6 certainly not, and if I boot into 2.6 and then
> reboot into 2.4, then 2.4 *does NOT* reserve that space.

Yes.  It is normal...

>     See the paragraph above: if I partition the disk under 2.6 the
> partition will have a bigger address than the one that will be
> available under 2.4, and that can give errors while accessing that
> extra sectors. What can I do? For technical limitations in my box, I
> have to use 2.6 for repartitioning that disk (and I will be doing
> that in less than a month) and this will lead to unaccesible sectors
> when I boot back into my usual 2.4 kernel :(

(1) You do not have to create partition over full disk.

(2) If you'll build your 2.4.x kernel with CONFIG_IDEDISK_STROKE=y
('Auto-Geometry Resizing support'), I bet that your problems with 2.4.x
kernels disappear.
							Petr



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