Note: ReadyBoost requires at least 256Mb of free space on your flash drive, and also requires minimum read/write speeds. Most modern memory cards or flash drives meet these requirements, but be aware that an old card may not work with it.
Boost Speed with a USB flash drive & Ready-boost
1. Insert a USB flash drive to a USB port on your computer. Windows will automatically see if your flash memory is ReadyBoost capable, and if so, you can directly choose to speed up your computer with ReadyBoost.
2. The ReadyBoost settings dialog will open when you select this. Choose “Use this device” and choose how much space you want ReadyBoost to use.
3. Click Ok, and Windows will setup ReadyBoost and start using it to speed up your computer. It will automatically use ReadyBoost whenever the card is connected to the computer.
4. When you view your flash drive in Explorer, you will notice a ReadyBoost file the size you chose before. This will be deleted when you eject your card or flash drive.
5. If you need to remove your drive to use elsewhere, simply eject as normal.
Although ReadyBoost may not make your computer feel like a Core i7 laptop with 8GB of RAM, it will still help performance and make multitasking even easier. Also, if you have, say, a memory stick and a flash drive, you can use both of them with ReadyBoost for the maximum benefit.I have even noticed better battery life when multitasking with ReadyBoost, as it lets you use your hard drive less.