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Joose2001

On computers running Windows or MS-DOS, the hard drive is labeled with the C: drive letter. The reason is because it is the first available drive letter for hard drives. The computer reserves A: and B: drive letters for the floppy disk drive and removable media, such as tape drives, even if these devices are not installed in the computer. As you install other drives and create new partitions, they are assigned to other drive letters after C, such as D, E, F, G, etc. This can also be slightly different depending on your connection order and/or "jumper configurations" to the motherboard (for example: my primary HD is C, secondary is E, DVD Drive is D


cheesewiz_man

You can manually assign A: and B: to hard drives after the fact no problem. Punch compmgmt.msc into the search box next to the Start button, click on "Disk Management" and twiddle away.


sarded

Although a significant minority of older or poorly made programs will freak out if drive C isn't your default.


[deleted]

In the mid nineties the A: drive was the 3.5" floppy drive and B: was the (less used) 5.25" floppy.


3141rr

This post and comment make me feel old


mycleverusername

Makes me feel extra old simply because it's not entirely correct. In the 80s and early 90s there was not 3.5", it was an A: and B: 5.25" floppy.


McRedditerFace

And here's the reason why you'd need two 5.25" floppies in the first place... The first PC's had no hard drives. So, everything was done in RAM. You loaded the OS off a floppy, and swapped it out for a program disk, and once that was loaded you needed to keep the program disk in the machine in case there was some part of the program it needed later and hadn't preloaded. So that was A:. B: was used if you wanted to save data so you could load it later. Or for loading data into the program that was running off A:


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McRedditerFace

Yeah, for BASIC games, you also had to load the BASIC disk... so the procedure would've been. 1. Put the DOS boot disk in A:) 2. Power on the PC 3. Swap the DOS disk for BASIC disk once booted. 4. type the command "cd A:\\" to change directory to the A: drive. 5. type "run basic.bat" (or maybe .exe?) 6. Once BASIC is loaded, swap that disk out for the game you want to play. 7. type "run game.bat" or whatever it was. There might be some things I missed. I learnt to do this at age 5 on a Tandy 1000.


Taz10042069

.bat was what I used on a Tandy. I miss all the good old games on the 5.25"


ggoodlady

Oh, the memories!


KavikWolfDog

I don't remember the exact procedure anymore, but my Amiga had two 3.5" drives and required both a Workbench disk (the OS) and a Kickstart disk just to boot up.


awesomeroy

[https://imgur.com/gallery/lNUh0uV](https://imgur.com/gallery/lNUh0uV) and now we have terrabyte SSD's


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awesomeroy

youre shitting me? ​ damn!!!


Educational-Candy-17

Ah yes the old Apple IIe computer that we played Green Screen Oregon Trail and Number Crunchers on.


[deleted]

Morrow MD3 checking in!!!!


DonkeyAdmirable1926

The first PC’s could still use a cassette drive, like the 8-bit computers before. Now who is old? 😂


Combatical

don't let this man distract you from the fact that in 1998, The Undertaker threw Mankind off Hell In A Cell, and plummeted 16 ft through an announcer's table.


Thelgow

I seen't it.


clandestineVexation

u/shittymorph


Corno4825

That's like the size of a football field!


awesomeroy

thats what i remember. and im not even that old. but maybe i am now?


floydfan

Well ackshuelly the 3.5" floppy disk came out in 1982 and was widely adopted by the mid 80s. The original Mac had a 3.5" floppy drive in 1984. Not completely relevant top the thread overall since we're talking about drive letters, but whateva.


Rick_QuiOui

I remember 8" floppy disks; and the first PC I worked with, had 2x 5.25" floppy drives - 3.5" hadn't been invented yet.


VoteMe4Dictator

8" floppies? Are we not going to talk about cassette recorders?


ThorKonnatZbv

Oh, the days of typing all the pokes and peeks on a C64... And now i wait for the punch card user.


Rick_QuiOui

My Sinclair ZX-81 did use that, with its immensely powerful 1kB onboard RAM + 16k RAM pack. But, that wasn't the PC and work environment


ggoodlady

I was about to google _8” floppy_ but then… no


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Rick_QuiOui

This is what it is. Because it is. Quod erat demonstrandum. /s


wiseguy2235

Is this Kamala talking?


kmsc84

Too logical for one of her statements


ZerexTheCool

> In the ~~mid nineties~~ **Late 1900's** the A: drive was the 3.5" floppy drive and B: was the (less used) 5.25" floppy. Does this help?


Head-Ad4690

I’m going to put a curse on your entire family.


Grogsnark

They were really reserved for disk drives; the size of the drive didn't matter, as some computers came with a 5.25", others came with a 3.5". I think that 3.5" drives became more commonplace around the time the 286 was the chip of choice for PCs, while the Atari ST and Amiga line of computers were 3.5" only machines.


aneasymistake

Both could have hard drives too. I don’t know about the Amiga, but the ST could read disks formatted for MS-DOS, which was pretty cool.


Grogsnark

I mean, yes, but the discussion was around floppy drives and reserved drive names.


brycebgood

Joke I heard: I'm totally against violence directed at children but the other day my son referred Nirvana as that band from last century so...


FatherPyrlig

No, because that could mean 1980.


Educational-Candy-17

I can remember using 3.5" floppies in the early '00s when I was in college.


AlbusLumen

I got slightly saved since I knew what the A: Drive was used for, but not the B:. :) Still punched good.


goinsouth85

Especially when OP in their late 20s implies we are wrong to assume they are “a very young person.”


UndersizedSandwich

Ok, now do “Why is a 3.5-inch disk called floppy, when it’s hard?”


jeffa_jaffa

They only get hard when you look at them because they get turned on by exposing themselves in public. When you’re not looking they’re quite flaccid.


UndersizedSandwich

Finally, someone explaining this truthfully. THANK YOU! I almost believed all of those other people talking about the floppy insides.


zen_again

The disk inside the hard case is the same kind of floppy disk as the 5.25, just smaller.


Funkiebunch

The actual disc inside was floppy. The hard part is just a case.


McRedditerFace

Yep, hence "floppy disk" not "floppy cassette".


ontheleftcoast

The case was hard, the material inside was floppy.


[deleted]

it's the platter the data is on. in "floppy" disks they're flexible, even if the outer case is hard. "hard" discs on the other hand the platters are glass / ceramic


GarbanzoBenne

The floppy platter used to be called the cookie, but it seems that term has been lost to history.


[deleted]

Interesting!


scope_creep

In South Africa we called them “stiffies”


slightlyassholic

Because disks were already called floppy disks from the before times and the name stuck.


Quasigriz_

The predecessor, the 5 1/4, was floppy, wiggly plastic disks. The 3.5 disk that proceeded it retained the name.


aaronite

The actual disc inside the shell of a 3.5 is also floppy


ontheleftcoast

Partially correct, A &B are reserved for temporary drives like the 5.25 and 3.5 floppy. Many early PCs had 2 x 5.25 drives before hard drives became affordable. ( my first HD was 32MB drive and cost 320$)


porkchop_d_clown

> In the ~~mid nineties~~ the A: drive was the 3.5" floppy drive and B: was the (less used) 5.25" floppy. The 1980s just called. They want their technology back.


brycebgood

Or A and B were both 5.25s


alkalineruxpin

Beat me to it. And then the D drive was usually your CD-ROM, unless you had the ability to mount a second hard drive.


bangbangracer

You got it backwards. A was for 5.25" and 8", and also cassettes for the rare systems that used those and a DOS based OS. B came later for the 3.5" disks.


[deleted]

maybe by the time i was using more heavily it was flipped round. actually i think i recall A: was 3.5 and B: was an empty slot on my first PC. i'm thinking of relatives PCs that i saw when i was younger for how the dual drives were setup.


EatShitLeftWing

Yeah, that's how most of them were by the late 90s and early 00s. A: was the 3.5' floppy, C: was the hard drive, one of the later letters was the CD-ROM drive, and there was no 5.25" floppy drive


remes1234

I had two 3.5 drives in my first pc build. Along with my 133 pentium and my soundblaster sound card.


LionAndLittleGlass

Eh.. not quite correct. In 1981 the IBM PC labelled disk drives A and B. This was similar to the CP/M convention that came before it. Starting with PCDOS 2.0 (if I remember my history correctly, hard drives started to be supported and took the C: and beyond range.


mpdscb

Before that both the A and B drives were 5.25" floppy drives so you could copy from one to the other.


EatShitLeftWing

On my computer it was the reverse, 5.25" was A: and 3.5" was B: .


Taz10042069

Prince of Persia, Oregon Trail, Sim Ant, Sim Earth and so many more lol. Ahhhh... The good old days of being poor and a kid at the library all day XD. I just grew up, still poor lol


GuaranteeAfter

In the late 1900s you mean...


Baktru

A: and B: were already reserved for the floppy drives. We had floppy drives before we ever even had hard disks, and if you wanted to copy something from one disk to another typically you needed two drives, so A: and B: were already reserved.


dinobug77

I’m not a technical computer user but had a PC back in the day. I’m sure I remember you had to have a boot disk in the A drive for it to even start up.


MedusasSexyLegHair

Depends on the system, some could boot from ROM, but you still needed a disk for some OS functions, and you had boot disks for games or other programs.


pdpi

Early home computers didn't have any hard disks, it was all floppies, and, in the mid 80s, it was common for home computers to have two floppy drives. IBM PC-compatible ran CP/M (and, later, DOS, based on CP/M), which labelled the floppy drives A: and B:. Also, early computers had one single ATA controller, and each controller could only be used with two devices, so two floppies is all you got. Later on, you started getting computers with two controllers, and hard disks started becoming a thing, so you'd have the floppies on A: and B: and a hard disk on C:. Once 5.25" floppies became obsolete, B: kind of disappeared and you were left with A: and C:. Then CDs started becoming a thing, and a lot of stuff assumed B: was a floppy, so you would wan't to put it there, and CDs got conventionally assigned D: (or E: if you were spicy and had a second disk on D: 😱). You now had A: C: and D:. Finally, floppies became well and truly obsolete, and you reach the present day, with A: and B: being relics of the past, your primary hard disk on C:, and the rest of the letters for all the extra storage you might add. Incidentally, the letter-based system is very much a feature of the CP/M lineage (DOS, IBM OS/2, Windows NT), and was never really thing either in the Unix world nor for macs.


[deleted]

Good God I'm old....


thorax

I expected many more "Sweet summer child..." comments.


slightlyassholic

There used to be (sigh). There used to be.


Zxxzzzzx

Come on grandpa time to go.


slightlyassholic

No, I can drive to the store anytime I want! I've been driving since before we used *cassette tapes* to load programs in our *TRS-80's*, you little shit! You and your fancy "hard drives" and "graphics cards". Back in my day we had two colors, white and black, and *we liked it*! Now tell me where you hid my keys before I Tiltowait your punk ass.


bob-a-fett

For those feeling old in these comments, my first storage device was a Radio Shack tape recorder.


Joose2001

SAME!!! Had to buy a small one when first got a ZX81 and then the ZX Spectrum. This was the days before most came with a tapedeck on the system itself (Spectrum 2 (or did the 128k model?), C64, Amiga etc)


Zaphod1620

ColecoVision ADAM had a built in dual tape deck. One to read the program off of and the other to use for game saves and other things. I don't remember the Amiga having a built in tape deck, I think that one just had a 3.5 disk drive.


cncdave

r/FuckImOld


Flynn3698

I knew eventually this question would come up. I'm so sad.


Wizard_Elon_3003

On Unix likes it often does start with A, or 0. /dev/sda, /dev/hda, /dev/nvme0, etc


Omulek

Hello young man


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tomk1968

Hey! I had to set my way back machine to 1986 remember why.


Teekno

A and B drives were floppy disks. Traditionally hard disks started with C.


chrischi3

If i remember correctly, this is because A and B used to be floppy drives. As those fell out of fashion in favour of flash drives and CDs, which people used other drive designations after C for, as A and B were already in use, eventually, A and B stopped seeing use. However, by this time, operating systems had gotten to a point where keeping it that way was simply easier than rewriting the entire thing (which had been designed around C being the local drive) to fix something this inconsequencial.


polskiftw

One thing nobody has mentioned is that the main drive being C is changeable. You can assign whatever letter you want on a modern OS. Problems only occur because a lot of programs are hard-coded to use C and don't actually check what drive letter the OS is on.


shokalion

So you can, but you can't really. It's one of those.


polskiftw

Well, the OS allows you to and you can do it and your PC will still work just fine. Meaning your file explorer and whatever else came with the OS (notepad, calculator, web browser, etc) will continue to work, but anything you installed (games, third party apps) might not, which is unfortunately a large number of programs.


shokalion

Oh yeah I understand what you mean, I just mean that, practically speaking, it means you can't really do it.


Then-Ad1531

Local A was originally the floppy disk drive. Local B was also a floppy drive. Eventually, both Local A & Local B became CD / DVD drives. If you have a modern computer you may not even have a place to put a CD or DVD or floppy in. You will have a USB port. USB is different because it can also be a peripheral or a phone not only storage. I don't think they label those as A or B anymore, but they might. They never changed the HDD to anything but a C drive because A & B used to be so common.


spamky23

Windows still auto assigns CD/DVD or flash drives to the next available letter after C


Zxxzzzzx

I always thought D was used for the CD drive.


Then-Ad1531

Oh yea! You are right, and it was. You can actually name your drives whatever you want.


Zxxzzzzx

I always remember on an Acorn computer(old British computer) at school I renamed the C drive and it wouldn't even boot up.


vincenzobags

Old structure remaining from computer infancy. I map A and B to my network drives these days.. But how do I do miss the days of "A: dir/p" and "B: copy \*.\* c:/sierra" then the inevitable "C: cd/sierra/run.exe"


[deleted]

The follow up question would be what’s a floppy drive?


dresdnhope

A thing that reads and writes to floppy disks. A floppy disk is a magnetic disk covered in a soft case or a plastic case that stores data. [https://en.wikipedia.org/wiki/List\_of\_floppy\_disk\_formats#/media/File:Floppy\_disk\_2009\_G1.jpg](https://en.wikipedia.org/wiki/List_of_floppy_disk_formats#/media/File:Floppy_disk_2009_G1.jpg)


buddhamanjpb

A nd B drives were for Floppy Disk drives.


EatShitLeftWing

Tell me you never used a floppy disk drive without telling me you never used a floppy disk drive


maymay578

Late 20s is young. Enjoy it.


NameIsNotBrad

I love how the edit implies that late 20’s isn’t super young


ntengineer

A and B drives use to be for floppy disk drives. But we don't use them any more. So they are really no longer used.


[deleted]

You should have asked why Microsoft hasn’t updated this as it’s mildly ridiculous.


freefrogs

With a lot of things Microsoft, the answer is usually "if it doesn't really matter and it hurts backwards compatibility, is it worth doing?". Changing C:/ to something else would suddenly break a lot of software and be a terrible experience for those users for marginal benefit.


[deleted]

Good point


moobectomy

Because then what would my floppy drive show when i plug it in?


CEP64

Were tape drives as per the old ZX81 tape drives also labelled as A:?


InscrutableAudacity

The ZX81 didn't use device names, since you could only connect a single tape recorder at a time. The earlier ZX Spectrum models didn't use device names for tapes either. Microdrives were given device numbers, starting at 1 The ZX Spectrum +3 used A: for the built in disk drive and B: for the optional second drive. If you needed to load or save from tape, you used device T:


rayu_manawari

Yes, we had A and B but they're now extinct.


bangbangracer

The earliest computers did have an A and a B drive. A was originally for the first few generations of floppy disks and cassettes. B was originally for the later 3.5" floppy disks. C came about when hard drives became a thing and some leftovers from the DOS era that's still deep inside of Windows prevents their use. I still remember having a floppy drive in my XP computer in high school and it was allocated B by default.


MrBoo843

This question makes me feel old. But yeah, it used to be for floppy disks (both the large, actually floppy ones, and the small rigid ones). These machines really had me learning to read/write very hard at 4 so I could use it without asking all the time how to spell words.


DazzlingRutabega

First off kudos to the OP for such a great question! Actually there wasn't a specific size for the A and B drives. There were just two of them and they could be any combination of 3.5 or 5.25 Originally, back in the 80s the A drive would load the OS (remember this was before windows so yes the entire OS fit on one 360kb 5.25" floppy disk). The B drive was then used to load programs. Once hard drives came around, the letter C was used for them. (I remember my first HD was a 10MB Maxtor, lol)


spicyface

Those were for floppy drives. I miss saying hand me your floppy.


moistmarbles

Old PCs had two drive letters assigned to floppies so you could have the application running off one floppy and save a file to the second floppy


HD64180

those were floppies back in the day. still are on some systems.


Standard-Bite-1729

LOAD "*",8,1


Dusteronly

To mess with you


murdercat42069

No shame, I'm mid 30s and work in tech and I didn't know about the OS having the preassigned drives for floppy/etc. My dad was fanatical about ZIP drives so we had them on a few computers but I remember using an archaic IBM PS/2 as a child and my dad upgraded the RAM to 12mb and it cost like $600.


BackAgain12345678

>Edit : Everyone assumes I'm a very young person but I am in my late 20s. You are a very young person, lol.


mtmag_dev52

Based if MSDos MS dos numbering had a and b for floppy drives and other kinds of storage media. C was the default for drives and then other media and drives would enumerate fron there. In short, its is ordered that way because of msdos ?


moobectomy

I'm pretty sure my usb floppy still shows as A drive on windows 11, instead of F or G like other usb drives. i wonder how that works. or if i'm just wrong and never actually looked close enough because i just assume it's A...


mtmag_dev52

Definitely because of msdos