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[ayoeness]

DOS. No idea which version though.

Remember having DOSSHELL for a while before we got windows.

[The Fifth Horseman]

DOS, 5.1 if my memory serves right, and Windows 3.11
Then Windows 95 and now XP.

[holydiver95]

I have in Virtual PC Windows 3.1 + Windows 98 Beta 1

[B-Wolf]

The first operating system I used was DOS (don't remember which version), with Windows 3.1 installed with it.

[hunvagy]

Smooth Operaatooor
Anyway, since the Commodore doesn't really qualify as a computer with an OS, I have to say MS-DOS 5.0. And Win 3.1, NC and the likes are not OSes *runs away from the public revenge*

[superjamie]

Tandy TRS-80 BASIC, though I barely understood more than typing "LOAD" and pressing play on the cassette tape back then.

The first OS I remember actually taking an interest in the version was DOS 5, I'm unsure if I had versions earlier than that. I even recall intentionally upgrading to DOS 6.2 so I could use DoubleSpace.

Then along came Windows, I used every iteration from 3.0 through to XP though I got sick of that when Vista was annouced and switched to Linux. DOSBox runs on everything these days anyway.

[RRS]

MS-DOS 5.0, maybe even previous version.

[rabadi]

DOS, although I do not remember which one. Most likely IBM PC DOS instead of MS-DOS.

[ianfreddie07]

Windows 98. I feel like a nub

[KrazeeXXL]

CAOS (Cassette Aided Operation System)

my dad bought a computer called KC85/2 (a z80 clone) to my 5th birthday as a surprise when I remember right. Best birtdhay party ever 23 years ago

it's "base" was basic and we had a module in it which expanded the RAM with 64kb

[edit] best thing was that my parents recorded programs/games via radio onto cassette which we were able to run onto this machine (for free). that was awesome.[/edit]

after the german reunification he bought an Amiga500+ with Kickstart 2.04(?) on it + a 40MB external hdd which heralded "hammertime". I loved this Amiga. Great graphics (28 colors iirc) and awesome sound at this time (+500 of the best games at this time!). PC's dated years back, had 16 colors, pc speaker or even ugly monochrom ^^

then we got the 286 which later became my first PC. As I got it into my hands I started with MS-DOS 6.0 and Win 3.1 on it. had early a trident 8900c which supported 256 colors and also a creative 8 bit mono soundcard *oops sorry for off-topic*

those were times