RAJ130WEB

Why is there no 'B' drive in computer? Letters A and B are reserved for Floppy Drives. C to Z are reserved for Hard Disks, CD, DVD, TAPE and Other Magnetic Drives and Disks. In most computers you have only one FDD and One HDD and CD. So A would be occupied by Floppy and C and D would be occupied by Hard Disk and CD ROM Respectively. If you have more then one partition on the Hard Disk the Hard Disk may accupy few more drive letters. Now a days the floppy is fading out so you are not seeing B Drive. But when i first learnt computers there was no hard disk and every computer used to have a: and b: We found the answer to your question, along with several tangents on PC drive letters, on the discussion boards at StorageReview.com. This computer forum is exceptionally civil and informative. The answer goes back to the glory days of floppy discs and DOS. The early DOS operating system designated two drives, A and B, strictly for floppy drives. Why? Because many early computers didn't have native hard drives -- they booted from Drive A, and ran applications from Drive B. Later, as computers came with hard drives, the second floppy drive became a useless appendage -- the computer equivalent of an appendix. To avoid confusion during the evolutionary window when computers with new hard drives coexisted beside computers with two floppies, the hard drives were given the "C" slot. Technically speaking, the "computer" isn't missing the B drive, it's just that later Microsoft operating systems have omitted it as unnecessary. You can read more about the ins and outs of archaic drive systems at Microsoft Support.