Mandriva One is sized to fit on a single CD, as a live distribution. A live distribution lets you try a Linux distribution without touching your existing installation in any way (you can have a look at our article, Try Ubuntu without Touching Your Windows Drive in Any Way, to get an idea of running a live distibution).
You can either install Mandriva by burning it to a CD or DVD, or you can install it from a USB flash drive. For the former method, you need to burn the Mandriva One ISO image to a CD/DVD and set up your BIOS to boot from your CD/DVD drive. The latter method is faster but your BIOS has to support booting from a flash drive. If you can see “Removable Drive” (or USB Drive) in your BIOS configuration as the first boot device, you can go with the USB flash disk installation.
To prepare your flash disk to boot Mandriva, you need to have the Unetbootin program. It supports Windows and Linux environments, so you are not likely to face any problem running it. Unetbootin does not require any installation, you run the executable file directly in Windows. Run the program, select the Mandriva ISO image you downloaded, select your USB thumb drive and let Unetbootin do the rest. The red rectangles on the screenshot shows the ISO image selected and where you have to choose your USB drive. When Unetbootin is finished, plug in your USB drive, restart your computer, change the BIOS settings to allow booting from a removable drive and off you go.
The following image gallery shows step by step instructions on installing Mandriva. The installation screenshots below assume a dedicated, full-disk,fresh installation (not an upgrade), US English language selection, one user, KDE as the default desktop manager and a 1024x768 screen resolution. You can change the settings to your liking.