Apparently a lot of non-technical people have never heard of linux, and if they have… they think that you have to have Windows to install it.
Well, while linux is a completely separate operating system that runs on its own, you now can install it directly via Windows, without the CD media. With Wubi, you can install Ubuntu in a folder, and if you don’t like what you see, then you can uninstall it and no harm, no foul.
No need to change your bootloader, no need to set up partitions. For those that want to be technical about it, it does actually set up a virtual disk, and it does add an entry in the Windows bootloader. You technically can set up other flavors also, but it’s defaulted to Ubuntu.
Open source… for Windows.