Re: ia32e, er EM64T that is...

[Alan Cox <alan redhat com>]

On Wed, Dec 22, 2004 at 08:23:36AM +0100, Mogens Kjaer wrote:
> FC3-32bit installs without problems, 4G available.
> FC3 x86-64 doesn't install, no disks are found.

SATA ? If so you are hitting a known limit/bug in the older SATA code that
Jeff has now fixed up.

> The funny thing is, if I write mem=4096M, it still
> boots, but only 3G memory is available.

Typically the extra memory is mapped higher than 4Gb and a 512Mb-1Gb hole
is left for the PCI devices.