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Managing Your Hard Drives A1: 230 You1 should defragment every week or so. Depending on the amount of file accessing you do, you might need to defragment more or less often. If you notice your disk speed slowing down a bit, you'll find that defragmenting speeds the access process some- what. Which kind of backup, a full or differential backup, should I perform? The first time you back up you should make a full backup. After you make one full backup, you can make subsequent differential back- ups of only those files that have changed. Be sure that you save the full backup, however, so that you can restore everything if you need to. If you have a disk failure, you'll restore the entire full backup and then restore each differential backup set of files. After you've made several differential backups, you might want to make a full backup once again. By making a full backup every once in a while, you will be able to reuse your differential tapes or disks. Q2: A2: Workshop The quiz and exercise questions are designed to test your knowledge of the material covered in this hour. The answers are in Appendix C, "Answers to Quizzes." Quiz 1: 2: 3: 4: 5: What is the difference between Disk Defragmenter and Disk Cleanup? True or false: Disk Defragmenter can remove unneeded files from your disk. True or false: If you run Disk Cleanup regularly, you'll never have to defragment your disk. Why does your hard disk access speed improve when you regularly use Disk Defragmenter? What is the difference between a full backup and an incremental backup? Exercises 1: Run Disk Defragmenter on all your computer's disk drives and defragment any drive that Win- dows XP deems requires it. 2: Run Disk Cleanup on your PC. Click the More Options tab to inspect areas of your disk drive that might need to be cleaned up.