Technology is wonderful, until it stops working as expected. Computers have a nasty habit of developing glitches or just going belly up altogether at the worst possible times. There's nothing that can prevent that, but a couple of open source tools can help mitigate disaster and maybe even save the day altogether. With Clonezilla you can create a perfect copy of your system. Using the System Rescue CD, you'll have all the tools you need to recover from many system crashes.