Found something
Using the hard disk drive instead of your CD drive with notebook computers saves power.
Your CD original will not be used so frequently and can be safely tucked away in your archive.
No more tiresome and inconvenient inserting and taking out of frequently-used CDs!
Virtual drives have a lower average access time to the stored data - thus the speed of your virtual drive and your "CDs" is determined by the speed of your hard disk drive. Experience your computer games for example in unimagined speed and say good-bye to any wobbly and jiggly video sequences