When referring to computers, C: is commonly used to denote the C drive or the first primary hard drive and partition on IBM compatible computers. In Windows, a user can get to the C: drive by opening My Computer. This drive is also labeled as Local Disk or Primary Drive, as seen in the picture below of the Primary Drive (C:) in Windows 10.

A:, D:, Drive letter, Hard drive terms, Primary

  • Why is the hard drive the C: drive?
  • How to rename or label a disk drive.
  • How to change a drive letter.
  • How to change drives in MS-DOS and Windows command line.
  • Hard drive help and support.