With the advancement in technology, today you can store music, movies and other data on CDs and DVDs. Most of us prefer making duplicate copies of our CDs and DVDs just in case it gets corrupted or scratched. Hence, it is important to know for us to learn about duplication.When you would like to have a back up or copies of your CD and DVD, the first thing that you have to do is transform the contents of the master copy on to a hard drive. This can be done by placing the master copy in the reader and then copying its contents to the hard drive.After copying the content, you need to place the blank CD or DVD into the reader. Then transfer data on to the blank CD. This process is also called as the burning process. Once the CDs are burnt, the copied CDs and DVDs are checked.This process can be done automatically using specialist machinery or on your home PC. However, if you have to duplicate large number of CDs and DVDs, it is advisable to take help from the professional services available. Duplication of a large number of CDs can be done in a short time by professionals who offer duplicating services.Moreover, the quality of duplication is much better when done by professional as compared to doing it at home. So, the next time, you want to duplicate CDs and DVDs contact duplicating professionals who will do your work quickly.