Re: 2.6.0 and auto geometry resizing?

[Andries Brouwer]

On Sun, Dec 21, 2003 at 04:28:50PM +0100, PeteVine wrote:

> I've got this problem with 2.6 kernels, namely I can't use my RAID 
> partitions as they are not detected at boot.  I've tracked the issue
> to what I believe is auto geometry resizing.
> 
> With 2.6 cfdisk shows:
> 
> hdc1           Boot, NC       Primary     OnTrackDM6                  33814,13                                   
> 
> Whereas with 2.4 there's no resizing: 
> 
> hdc1                    Primary   Linux swap                        254,99     

It is clear what happens. Both kernels see different partition tables.
You did not show the 2.4 boot messages, but no doubt they will mention
something about the boot manager shift.
Give 2.6 the appropriate boot parameter and all will be fine.

What parameter? Quoting from ide.c:
 * "hdx=remap63"        : add 63 to all sector numbers (for OnTrack DM)
 * "hdx=remap"          : remap 0->1 (for EZDrive)

So if you have OnTrack you need "hdc=remap63".

Andries

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