How much information will fit on a blank disc?
Most discs will let you burn at least 650 MB of data. Some high-capacity discs will hold even more. By contrast, students’ H: drives are limited to 100 MB. This makes burning a CD an ideal medium for backing up an entire H: drive, or any other important files or documents. If you have a CD-R or CD-RW disc with some information already on it, you may continue to burn more files until it is full, unless the disc is closed (write-protected).
