one of these?:
Aos|Oberon 2.3.6
DrDOS 7.2
FreeDos 7
MS DOS 5.0
MS DOS 7
OS/2
QubeOS
SkyOS
Linux menu
Conectiva
Debian
Immunix
JBLinux
Libranet
Mandrake
RedHat
Slackware
Storm
Vector
Unix menu
AtheOS 0.3.7
BeOS 5 Personal Edition
BeOS 5.0.3 Developer Edition
FreeBSD 4.4
Minix 2.2
NetBSD 1.5
OpenBSD 2.9
QNX RTP 6.0 (hosted)
QNX RTP 6.1 (dedicated)
QNX Neutrino OS 6.2
SyllableOS 0.4.0
Windows menu
Windows 1.01
Windows 1.03
Windows 2.03
Windows 2.10
Windows 3.1
Windows 95
Windows 98 First Edition
Windows 98 Second Edition
Windows 98 SE Lite (not counted as separate)
Windows Me
Windows 2000
Windows XP