[mdlug] Fixing grub with dual boot

[Drew]

Look for a file at /boot/grub/grub.cfg, and all files that it calls.
Make sure that there's a 'set timeout N' with N being a sufficiently
large number of seconds for you to react, before the menu gets run.
Also, 'set default D' with D being the menu entry to be booted in the
event that you just let the boot sequence run. Again, this should
occur before the menu.

You will probably see a comment saying not to edit the file. So long
as you don't run grub-update you can ignore this directive.
grub-update reads a bunch of files somewhere in the /etc tree and
generates a new grub.cfg.