When using a CD-R to store your information, you may want to erase the contents of that CD-R after initially recording it. When using data CDs you can freely exchange the contents of the disc with data that you have stored on your computer. The process for erasing the contents of a compact disc has been made very simple with Windows. It only takes a few minutes to have the disc ready to be written on again.
Put the CD in the computer's CD-R drive. Go to "My Computer" in the "Start"menu. Find the CD-R drive and right-click on the icon. This space is reserved for putting temp files in queue before the burning process. You can also verify the information contained on the disc is that which you wish to erase.
Click “Erase This CD-RW” from the “CD Writing Tasks” section of that screen. You will have to confirm that you wish to continue with the process of erasing the disc as well.
When you receive a message of completion, push the "Eject" button on the actual drive. Your CD-R will now be erased and ready for another use.