Thanks All It was indeed the wrong kernel! vmlinuz-2.6.16.21-0.25-xenpae worked (well started anyway). Suspect I have more fun to come yet. Although I did google the kernel RPM I was using and one the RMPfinders had notes saying it was ok for both VT and pae. Regards Lee On Sat, 2006-12-02 at 17:46 -0500, Andrew Cathrow wrote: > If we're talking about a para-virtualised machine rather than hardware > virtualisation then you have to watch out for PAE and also 32/64 bit. > > The FC6 xen kernel is PAE, which means that the guest kernel must also > be pae, you can't mix them. You'd see the same thing if you tried to > run the FC5 domU kernel on FC6 > Also you can't run a 64bit kernel on a 32bit host. > > Given the file names I saw I'd suspect that the issue is that you've > picked SUSE's non-pae kernel. > > Aic > > > On Sat, 2006-12-02 at 23:29 +0100, Paul Wouters wrote: > > On Sat, 2 Dec 2006, Andrew Cathrow wrote: > > > > > I've not got openSUSE installed - but I downloaded the kernel-xen and > > > kernel-xenpae RPM's to check the file names. > > > What I saw was that the pae kernels were in the kernel-xenpae rpm and > > > had a pae suffix. > > > > > > vmlinuz-2.6.16.13-4-xenpae > > > > > > The invalid argument error (helpful eh?) typically means pae /non-pae > > > mismatch. > > > > Perhaps it is an ABI change? Eg xen 3.0.3 vs 3.0.2? > > > > Can't you boot the redhat xen kernel on the suse OS. There can't be much > > serious differences. The only catch here is that you will need to hack > > the redhat initrd image if you install it on the dom0, or grab an initrd > > from a guest installed redhat machine. > > > > Paul > -- > > Andrew Cathrow > Red Hat, Inc. > > (678) 733 0452 - Mobile > (404) 437 6178 - Home Office > > acathrow@xxxxxxxxxx -- Fedora-xen mailing list Fedora-xen@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-xen