Windows 3.1 in my BIOS? It’s more likely than you think

A hacker by the name of [redsPL] thought that Microsoft’s latest and greatest circa 1992 might do well crammed into the free space remaining on a ThinkPad X200’s firmware EEPROM. It would take a little fiddling, plus the small matter of convincing the BIOS to see the EEPROM as a virtual floppy drive, but clearly those are all minor inconveniences for anyone mad enough to boot their hardware into a nearly 30 year old copy of Visual Basic for a laugh. Of course, Windows 3.1 was not designed for modern hardware and no proper drivers exist for much of it.

Source: hackaday.com