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GRUB2 is cabable of mounting ISO images and loading contained kernels.

That means you can save unmodified liveCD ISO images on a boot partition with GRUB2 and load them directly.
This is not a CD or DVD emulator but simply loopback access, as if you'd mount it in Linux with mount -o loop foo.iso /bar.

If you want to retain the individual boot menus of your liveCDs, you need to recreate them with GRUB2 syntax.

Fortunately some, albeit very few, live CDs ship with a loopback.cfg for this purpose nowadays.
Off the top of my head, new Ubuntu releases and GRML do so. GRML was one of the first.

http://michael-prokop.at/blog/2011/01/07/booting-iso-images-from-within-grub2/
http://www.supergrubdisk.org/wiki/Loopback.cfg
http://grml.org/

I wasn't familiar with zsh until I used grml (a fairly handy debian-based live distro, I use for fixing things on occasion). It comes with a pretty spiffy zshrc and zsh by default, which opened me to some of the features of it... pretty nifty... Now I use zsh on everything.

Some info about grml's use of zsh, here.

I wasn't familiar with zsh until I used grml (a fairly handy debian-based live distro, I use for fixing things on occasion). It comes with a pretty spiffy zshrc and zsh by default, which opened me to some of the features of it... pretty nifty... Now I use zsh on everything.

Some info about grml's use of zsh, here.

Didn't you hear that debian, openSuSE, Arch, Grml and Gentoo are merging?

http://www.debian.org/
http://www.opensuse.org/
http://www.archlinux.org/
http://www.gentoo.org/
http://www.grml.org/

You've already got a lot of replies about VirtualBox, so I'll spare you the repetition.
It's a decent desktop virtualization solution, free, and very stable.

What you may not know is Grml, a Debian-based installable "live" distro. I've tried quite a few of those, and that's the one I kept. I'm always carrying a Grml CD around, just in case I come across some box that won't boot. Grml has *amazing* hardware support, in addition to a very stable architecture that will fall back on whatever is supported. I have rarely seen any PC or Mac that wouldn't boot Grml - and if it really can't, it's probably not worth buying. And yes, it's got everything you need for a Linux course, including a desktop, applications, compilers and scripting languages (if that's in your curriculum).

Grml gets additional bonus points for keeping the fine UNIX tradition of unpronouncable names.
Who needs vocals when you've got phlegm?

http://grml.org/

CJ

grml is nice. deb based, zsh by default, lots of packages, etc.

Why is "linux" hard to pronounce? If you have problems with that probably it isn't for you. Oh, and btw the Linux pronunciation is documented.

What would you say about the grml project? Or about the overlengthy and oversimplified GNU Is Not Unix Image Manipulation Program Toolkit?

I have a couple lying around, but the one I always pull out is grml. It's focused on text tools --"linux for sysadmins" I think is the phrase they use. It's booted on everything I ever tried it on and has good support for wireless cards. Plus they can fit a lot more on a cd by skipping KDE, and it boots so much faster than knoppix.

grml is a bootable CD (Live-CD) originally based on Knoppix and nowadays based on Debian.

Special new features: [...] added window managers fvwm-crystal and dwm [...]

grml is a bootable CD (Live-CD) originally based on Knoppix and nowadays based on Debian.

Special new features: [...] added window managers fvwm-crystal and dwm [...]

Actually, I prefer GRML for all kind of sysadmin tasks, since it is especially designed for system administrators who need to do stuff like recovering broken Windows installations, network debugging, security audits of IT infrastructure, etc.