A curiosity recently caught our eye—that curiosity is KolibriOS, a super-lightweight, ultra-fast OS designed for legacy PCs with its floppy drive-friendly install size of just 1.44 MB.

The 720KB 3.5" floppy was introduced on IBM's Convertible laptop. Capacity doubled to 1.44MB with the PS/2 line, and 1.44MB drives supported both media. The visible difference between the two was ...