Double-sided discs often have no label instead, each side of the disc is identified with small writing around the center of the disc. Simply remove the disc from the drive, flip it over, and reinsert it in the drive to use the other side of the disc. You insert a single-sided disc in the drive with the label side up. Manufacturers usually place a silk-screened label on the top layer of these single-sided discs. With some discs, you can read and/or write on one side only. On some, you push a button to slide out a tray, insert the disc, and then push the same button to close the tray others are slot loaded, which means you insert the disc in a narrow opening on the drive. Nearly every personal computer today includes some type of optical disc drive installed in a drive bay. Others are read/write, which allows users to save on the disc just as they save on a hard disk. Some optical disc formats are read only, meaning users cannot write (save) on the media. These discs usually are 4.75 inches in diameter and less than one-twentieth of an inch thick. Optical discs primarily store software, data, digital photos, movies, and music. While a CD or also known as COMPACT DISC is small and portable round medium disc made of Molded Polymer used for storing data or information electronically.Īn optical disc is a type of optical storage media that consists of a flat, round, portable disc made of metal, plastic, and lacquer. These discs usually are 4.75 inches in diameter and less than one-twentieth of an inch thick. Summary: Difference Between Optical Disk and CD is that an optical disc is a type of optical storage media that consists of a flat, round, portable disc made of metal, plastic, and lacquer.
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