VM's Grub menu invisible with XenServer 6.0.2?

Question

I have a dual-boot VM on XenServer 6.0.2 but grub just shows up as a black screen. I can still make a selection and such, but it's just a black screen in the XenServer console. Any ideas on how to make this visible?

Answer 1

After further research, it looks like this is related to a bug in XenServer Bug 30978

The temporary solution I have found is based on a suggestion within the bug comments. It looks like the workaround requires you to switch grub to console mode.

Solution for Debian 7.4:

Manual:

• Edit: /etc/default/grub
• Uncomment: GRUB_TERMINAL=console
• Run: update-grub

Automated:

#!/bin/sh

sed -i "s/#GRUB_TERMINAL=console/GRUB_TERMINAL=console/g" /etc/default/grub
update-grub