Menuet is a multitasking real-time operating system that fits on a single 1.44-MB floppy.
From their site:
Menuet is a fully 32 bit assembly written, graphical RealTimeOperatingSystem for assembly programming & distributed under General Public License.
See http://www.menuetos.org/ for further information.
Operating system written from the ground up in assembly language.
There is fat32 hard drive support (No NTFS yet.)
Many programmers in Russia and groups are forming worldwide.
From AssemblyLanguage:
Archives and New demos(5/14/04) are available @ http://www.geocities.com/menuetusa
English Language Distros with expanded menu system and FAT32 and all partitions readable. 5/20/04