IBM OS 2 Question:

OS/2 Warp 4 can be installed over the following systems.
► OS/2 1.3
► OS/2 2.0 and 2.1
► OS/2 for Windows
► OS/2 for Windows plus Service Pak
► DOS 3.1 or greater with Windows 3.1, 3.11
► DOS 3.1 or greater with Windows for Workgroups 3.10 or 3.11
► OS/2 Warp V3.0
► OS/2 Warp with WIN-OS/2 V3.0
► OS/2 Warp Connect V3.0
► OS/2 Warp Connect with WIN-OS/2 V3.0
► over itself
► in a totally empty partition