OverviewDrives
A drive is a form of fixed, networked or removable media used as a storage device.
The term "drive" can also refer to the drive letter, which is the letter assigned to the drive during the computer boot process. A single letter of the alphabet is assigned to each drive as it is detected at startup. The letters "A" and "B" are reserved for floppy drives, and the rest of the letters (from C to Z) are assigned in order to the various hard drives, CD-ROM drives, and any other drives attached to the system.
For example, if your system has a single hard drive and a CD-ROM drive, your C: drive is your hard drive, and your D: drive is your CD-ROM. If your hard drive is split into two logical drives or "partitions," then C: and D: would refer to those partitions, and your CD-ROM drive would be E:.
Next: Partitions