Hi
hoping someone can help me here. We have two ESX 3.5 servers running on identical DELL Poweredge 2900 servers.
I attempted to upgrade one of these to ESX 4 using the upgrade client from vSphere. All went well until the server reboot and then I got a: root (hd 0,1) ERROR 22, no such partition. Now I beleive this was down to the RAID arrays in the server (2 RAID Arrays) where it boots off the second array but then couldnt see the upgrade partition on the datastore. I then edited the ESX 4 upgrade option at the boot loader prompt to tell set the upgrade partition to hd 1,1, selected upgrade from the boot loader again and it loaded it found the upgrade partition and did the upgrade sucessfully. I then rebooted and selected ESX 4 and got a similar error about the partition not being found. It then dropped be back to the boot loader menu and I selected the old ESX 3.5 and it booted and ran 3.5 fine. I then shut down the server again and restarted it (all vm's still powered off) and when it rebooted this time it got to: GRUB _ (with a flashing _) and I am unable to do anything except CRTLALTDEL to reboot the server!!!!!! I have tried booting of the 3.5 CD and choosing upgrade and it finds existing 3.5 and upgrades fine but again when I reboot it gets stuck at GRUB _
I've tried to ring support but it looks like my boss only bought gold support (grrrrr) so I cannot get any support until monday morning!!!
Can anyone help please??!! (dont know if it might help but as the servers are identical h/w is there a way to get working grub from the working server and replace it on the broken one? just an idea 
Thanks
