What's the oldest operating system you have currently active

[Anuj Dhawan]

What's the oldest operating system you have currently active on one of your computers?

Anyone have 98? 95? Me?

What about at work? Some companies may have wanted to continue running something stable for control purposes in a test environment. Anyone using something old at work?

[BobThomas]

I had used ME.

I still have Windows XP and 98 at some PCs in office.

[Sandy]

Still running Windows NT on couple of PCs at office...

[Robert Sample]

Would MVS 3.8 on Hercules count? <g>

[Anuj Dhawan]

Did not realize that someone can come up with that... good one! Sure, that counts - but then that seems to be the winner...

[DB2 Guy]

Robert seems to break the rules, no!

Have used Windows NT lately...

[LearnMainframe]

XP.

[harish123]

Same XP.

[AD991]

Worked with Windows 95/98 but these days Windows 7.

[Nick Jones]

Windows XP...

[T1300AD]

XP.

[Dino]

Windows XP.

[Anjali Chopra]

Joined the new project with Windos XP on the computer...

[Kapil Sharma]

Windows 7.

[enrico-sorichetti]

Would MVS 3.8 on Hercules count?

Did not realize that someone can come up with that... good one! Sure, that counts - but then that seems to be the winner...

NOPE

IBSYS/IBJOB/IBFTC
https://archive.org/stream/bitsavers_ib ... 4_djvu.txt

while MVS is from the mid seventies

[nicc]

I had 95 on my Thinkpad but wanted OS/2. Screwed up that installation so I re-installed 95 and upgraded to 98. Now I have gone back to PCDOS 7 with win 3.1 for some of my software that does not run on Win8 and some hardware that does not come with USB and new machines don't come with the connectors (serial/parallel ports) that I also require.

[Anuj Dhawan]

What software you still need which require you to have PCDOS7 and win 3.1?

[B Mkote]

I have used Windows XP lately.

[nicc]

Re PCDOS7 - Miracle piano teaching system from circa 1992

[William Collins]

Ah. The famous 23-year-course in Teach-Yourself-Piano-in-8000-easy-steps.