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I've always wondered why the default letter for Windows OS drive is "C."

asked Jan 28 '13 at 10:35

IamTechCrazy's gravatar image


edited Jan 28 '13 at 17:52

Fogarty's gravatar image

Fogarty ♦♦

Back in the day Drive A and B where dedicated as floppy drives... so the lowest level for a hard drive had to be C. and the OS drive naturally should be the first drive that appears.

Some things are just that way because someone said it should be that way. no real rime nor reason...

answered Jan 28 '13 at 11:05

trueb's gravatar image


Usually when you had bought a computer way back in the early 90's They usually came with one or two flippy disk. Usually 1 5.25 inch floppy disk and a second 3.5 inch diskette. Or two of the same time. Depending on how it was bought at the time. So usually at that time the A and the B were the floppy drives way back in the good old Disk Operating Systems (Or Dos for short.) The next logical drive for something like a hard drive. the letter C was assigned to it for hard drives themselves. I remember a fad at one point with the 286's up to the 486's where you could use an multi I/O card that could used up to four floppy drives in one system. But you needed some drivers to tell it it had what floppy drives were there. Since most cases. in the bios you only had 2 floppies there.

answered Jan 28 '13 at 15:27

Compucore's gravatar image


in fact in the old IBM PC the way it was set up is that there where flags in memory saying how many floppy drives it had, and there was no option of having 0 drives

(Jan 28 '13 at 17:22) trueb trueb's gravatar image

We're talking about the original IBM PC right not their clone counterparts. Or other manufacturer making similar PC compatible computers.

(Jan 28 '13 at 19:44) Compucore Compucore's gravatar image

all PCs still have the fingerprints of the old IBM PC. In fact, to the best of my knowledge there is still the dedicated place in memory where the flags remain.

(Jan 28 '13 at 20:12) trueb trueb's gravatar image

The OS drive isn't C. The OS drive is "/". :D

answered Jan 28 '13 at 23:37

Drmgiver's gravatar image


well if you want to get technical that is your root directory... not to be confused with the directory root...

(Jan 28 '13 at 23:59) trueb trueb's gravatar image

Ok fine. The disk is sda. :P

(Jan 29 '13 at 11:55) Drmgiver Drmgiver's gravatar image

OKay but that is under the Linux or Unix variants that see it as that. It is another way of seeing the hard drives on your IDE or Sata cabling. Instead of seeing it as in DOS or in windows as the first hard drive available.

(Jan 30 '13 at 13:46) Compucore Compucore's gravatar image
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Asked: Jan 28 '13 at 10:35

Seen: 1,557 times

Last updated: Jan 30 '13 at 13:46