How to create Grub boot disk?

Question

So I'm doing a test. I've installed Windows 7 and Ubuntu 11.04 side-by-side. Now, I'd like to be able to launch the Ubuntu install from within Windows using VirtualBox. I was following the instructions here but they don't seem to apply to 11.04.

I got stuck on step 2. /usr/lib/grub/*-pc/stage2_eltorito and /boot/grub/menu.lst don't exist. If you can tell me where to find those, that would be a good start. However, using find / -name menu.lst yielded no results.

How do I create a Grub boot disk that I can use with VirtualBox in 11.04?

Answer 1

The menu.lst file was part of the original GRUB. Ubuntu now uses GRUB2 by default, so the config file has changed to /boot/grub.cfg.

Here is a rather long primer about GRUB2. Scroll down to section 5 to read about editing the GRUB config file. Note that you shouldn't edit this file directly in normal circumstances. Instead, editing /etc/default/grub is the preferred way to prevent overwriting your changes on update.

Here's another primer on editing the GRUB2 config file. It's not as technical.