That's just a misleading label on the 1 bootable disk to start the installer itself. You really do need many of the other 20+ disks to install the OS.

I had this exact set of floppies.

Do you remember pressing ALT-F1 when the blob appeared to get a (TUI, but no session manager) OS/2 environment running from removable disc? (-:

Plus an extra for TCP/IP and a bunch more for Communications Manager. God, I spent a lot of time installing those.

I had forgotten the existence of OS/2 Warp Connect. Now I may have nightmares of staring at an installer.

We have it pretty easy these days, when even the worst Chinese piece of junk can be assumed to get onto a WLAN and connect to a singular global network. No protocols to configure, no add-on software to install.

The whole installation was more like 20 floppies back then, though. Source: copied and installed dozens of internal use only betas of 2.0 up to Warp.

That's about the size of win3.1. Does this single disk include GUI or not?

I remember Windows 3.1 to use far fewer disks. A cursory search on eBay says six.

OS/2 2.0 came on 21 3.5~ floppies.

http://www.os2museum.com/wp/os2-history/os2-2-0/

> IBM was selling OS/2 2.0 versions on 3½” and 5¼” HD floppies as well as CD-ROM versions, although CD-ROM drives were far from common in 1992 and OS/2 2.0 only supported a few SCSI CD-ROMs. The tested version was delivered on 3½” floppies, 21 disks total.

Yeah, a full OS with a GUI, drivers and a userland on a floppy. That is pretty darn small!

A demo of QNX has been circulated in tech magazines on a single floppy disk: http://toastytech.com/guis/qnxdemo.html

I remember this one: https://en.wikipedia.org/wiki/MenuetOS Still impressive today :)

You should check out the Amiga. It had exactly that.

1MBOS