You can't really run any form of UNIX on less than a 386.My ultimate goal for this thing is to get an ethernet card for this thing and run a UNIX webserver.
286 is basically a 8086 with protected memory, it's still a 16 bit processor with 16:16 addressing, not linear 32 bit addressing.
Okay, you can run early versions of QNX that limits the processes to 64k data. God knows what Minix would do.