Why Windows doesn’t have A and B Drive? Why it starts from C drive?

Why hard drives start with letter C and not A?

Windows A driveMany of you may have wondered why every computer has the hard drives starting with the alphabet C, D, E and so on? Why you can not find any hard drive starting with letter A or B?

Now, let me give you a brief explanation of “Why hard drives start with letter C and not A?“.

Hard Drive is used to store data. It stores all the files and folders. They can store over 100 GB of data. The hard drive uses magnetic storage to store and retrieve data. In the case of Windows and other operating systems, the hard drive is divided into various portions. Each part of the hard drive is assigned an “Alphabet”. Every drive is assigned a letter based on the preference of media files stored on the computer.

Earlier in the year 1967, IBM invented Floppy Disk Drive (FDD). Before this period, computers came without the hard drive. Later, floppies were invented and were used as the primary storage for the computers. Each computer had 2 floppy drives and was named with the letter “A and B”. These were:

  1. The 5.25-inch floppy disk with a storage capacity of 1.2 MB.
  2. The 3.5-inch floppy disk with a storage capacity of 1.44 MB.

By mid- 1990’s, 5.25-inch floppy disk extinct and the market were captured by 3.5-inch floppy disk. In 2011, Sony was the last company to manufacture 3.5-inch floppy disk. Nowadays, you may not have Floppy Disk Drive in your computer as they are extinct now but by default letters “A and B” are assigned to floppy disk drives. It a practice that is followed universally.

Currently, the floppy disc has become extinct in the world of technology. They are no more in use as hard drives. Although, if you connect a floppy disk to your computer system, it will show the drive with letter “A”.  This is why the name of remaining (other) hard drives start with letter C, D, E and so on. “A and B” hard drive names are still used to refer to an old technology of Floppy Disk Drive (FDD).

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