Pop the installer in, power down your Macintosh and unplug your backup drive, it would be a cryin’ shame if you accidentally installed over your backup. Make sure everything boots up, poke around a bit, make sure everything seems to be working. Once CCC is done, reboot your Mac with your external drive still connected, holding down the option key to boot from the backup drive. Now, depending on the size of your hard drive, you’ve got a chance to watch either the standard, or extended version of Lord of the Rings. Just remember to make your backup drive bootable, you will have to completely wipe your destination drive. To create a bootable backup of your main drive there is only one totally free, easy-to-use choice, Carbon Copy Cloner, and it’s push one button simple. Upgrading to Lion through the App Store is uncharted territory, and while it’s unlikely anything will go wrong, why take chances? Let’s make a bootable backup of your main drive just in case.

Just be careful to know what you’re deleting. Give it a whirl, and you may be just as surprised as we were to learn that your ‘Downloads’ directory is taking up half your hard drive. Fortunately, our friends at Omni Group have a utility just for that. Our hard drives always seem to be shrinking, and it’s often hard to tell where most of that space goes. It is also far slower.After you’ve cleaned up all your redundant files, now it’s time to ‘sweep’ your disk. It can be far more hard work than the infinitely more polished VMware Fusions and Parallels Desktop products.

As mentioned though it does work, I have myself successfully get Snow Leopard Server running in it. I am frankly disgusted over their failure to provide Mac guest additions to address all these issues. It does not have any Mac guest additions meaning it cannot easily support multiple video resolutions, it cannot be configured with more than one CPU core in a VM, it cannot use shared folders - you would instead have to login to a network file server, it cannot even do copy & paste properly. It works is the best thing I can say about it. VirtualBox is an Oracle product and you get what you pay (zero) for. If you want a free solution which does not have this problem then you can use VirtualBox to run Mac VM guests. As VMware Fusion like Parallels Desktop runs in OS X it does not have this problem. vSphere to run Mac guests is not allowed by Apple's EULA as it fails to meet the criteria of running a Mac VM guest within a Mac operating system. While technically both can run on a Mac and both can in theory host Mac guest VMs, there is some opinion that using ESXi aka. vSphere as you mention, and there is VMware Fusion. VMware do to virtualisation products that run on Mac, there is ESXi aka.

How to install rosetta on mac os x lion