Issue: P2V Old Gentoo Server to ESXi5

Good Day Everyone,

I have a small issue. I recently P2V'd a small desktop computer that was running Linux 2.6.18-gentoo-r4 into a VM on ESXi 5.0. When I attempt to power on the machine - I get a kernel panic that says

Kernel Panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0). <6>Time: tsc clocksource has been installed.

My initial thoughts are to attempt to recompile the kernel to a higher version of Gentoo.

Does anyone have any thoughts?

Thanks

Steve