We know now that VMware ESX Server 3.5 works well with the HP Proliant ML110 G5. So, I thought I'd try running it on the HP Proliant ML115 G5. This however did not go as well a I thought it would.The integrated NIC in both the ML110 and ML115 is not supported, that I knew, so I installed an Intel Pro1000 GT NIC in the ML115. This card is supported so I was able to install VMware ESX 3.5 on the ML115 with no problems at all.
However, when the server booted up and started loading the VMKernel modules... that was where it all went horribly wrong. The server could not mount the root partition!!! Read on, because there is a fix to this problem.