hi kevin,
   Since the CHS/LBA also has been resovled yesterday, now the problems is that
grub can not load the kenerl by "invalid or unsupported executable format".
i tried to cat (hd0,0)/menu.lst. It seems the output is not correct too.

On Wed, Aug 19, 2009 at 9:38 PM, Kevin O'Connor <kevin@koconnor.net> wrote:
On Wed, Aug 19, 2009 at 06:30:12PM +0800, Jason Wang wrote:
>  Hi all,
>      I am glad to tell you that usbrom can boot grub from usb disk
> correctly. It can not boot linux by error " Selected cylinder exceeds
> maximum supported by bios".
> I suppose that becase of the kernel are located in the second partition of
> the disk. I will try to make a new usb linux. And try to boot that later.
>
> BTW, Kevin , do you know the reason why the bios does not support larger
> cylinder?

That's odd.  How big is the drive, and what CHS settings are you
returning?

Also, I vaguely recall grub having an option to enable LBA based disk
reads.

-Kevin



--
Jason Wang
Peking University