Hello!

I was looking through internet for how to boot ISO files from a boot loader, and I'd like that boot loader was GRUB.

But I saw in some forums that GRUB doesn't do that directly, unless by extracting the contents and/or copying the file to an empty partition.

However, I found that Grub4DOS boots some ISO files (and it works on DOS, Windows and Linux, not only the named DOS), and Grub2 can do it also.

Here an example of menu.lst Grub4DOS config file to boot an ISO image:

Here an example of grub.cfg Grub2 config file to boot an ISO image:

References:
- Grub4DOS Guide
- Grub 2 Guide

Hope you enjoy!