Howdy,
We experienced a lengthy power outage during off-hours. When the UPS drained completely our ESXi 5.5 server shut down ungracefully. Upon trying to start the server again I'm greeted with the following screen...

GRUB Loading stage1.5.
GRUB loading, please wait...
Error 17
I was able to get the server running again by installing VMware ESXi 5.5 onto a USB flash drive, booting from that drive, finding the virtual machine's VMX file in the server's datastore and adding it to the temporary installation's list of virtual machines.
I'd like to resolve this GRUB issue but I have no (zero, nadda, zilch) idea how to fix this problem.
Can anyone provide guidance?