MS-DOS 5.0
First Operating System: Windows 98
First Linux Distribution: Ubuntu Trusty
Windows 95
Windows 95 and Macintosh LC, elementary school computer lab stuff. My grandpa had a Windows 3.1 IBM PS/2. Those were all pretty old and practically obsolete computers when I used those, 98SE was out and ME was right around the corner.
My very first Linux distribution experience was Mandrake Linux I believe version 9 or something like that. Didnโt last that long though, I revisited Linux later with Ubuntu 7.04 which is when I actually switched to Linux full time.
ArchLinux since 2011. Still running that install to this day!
Desktop: DOS
Mobile: Android 2.3