Copy CDs to an External Hard Drive
A nice thing about having an external hard drive is that it gives you the space to store things you ordinarily couldn't with just your computer's internal hard drive. For example, if you have important CDROM disks, you can store images of those CDs to your external hard drive. To do this, use a CD burning program such as Nero or InfraRecorder to create an image of your disk. Here is how to do this using InfraRecorder. This is a free program that can be downloaded at http://infrarecorder.org/.
When you start InfraRecorder, Choose the "Data Disc" button, choosing either CD or DVD.
When you get to the InfraRecorder Explorer, choose "Actions" and then "Copy Disc" and then "To a Disc Image."
Next, choose your source drive. This is the CD or DVD drive where the disc you are copying is located.
Next, click the button with the three dots to the right of the "Image File" field. This allows you to navigate to a drive and folder of your choice where you want to store your CD image.
Select your external hard drive and click the "Save" button. You now have a backup image of your CD saved to your external hard drive for whenever you need to make a disk that is exactly like the one you just copied.