On Wed, 20 Sep 2006, Michael Mansour wrote: > Hi Connie, > > > > Hi, > > > > > > I've recently rebuilt some of my DL360's from earlier releases to SL4.3 > > > > > > With the HP Proliant DL360's (generation 1) single CPU units, they refuse to > > > boot the latest 2.6.9-42.0.2.EL kernel, but boot fine from the earlier > > > 2.6.9-34.EL kernel. > > > > > > There's no kernel panic from the boot screen, just hangs on boot and the > > > machine has to be power cycled. > > > > > > On exactly the same model servers but with an extra CPU, booting off the > > > latest SMP kernel boots fine. > > > > > > Any ideas how I can troubel-shoot this one? > > > > > > I've yet to disbale the "quiet" boot mode to see exactly where it hangs. I've > > > also yet to try to boot an SMP kernel on a UP server to see if it would > > > actually work. > > > > If hyperthreading is turned on try turning it off. > > There's no hyperthreading on these machines. 1Ghz PIII cpu's. > > > Also could try > > > > linux noapci Sorry that should be linux acpi=off or another one to try linux noapic I get those backwards all the time. -connie > > I'll definately try that and let you know. > > Michael. > > > -connie > >