SCO OpenServer Handbook
Chapter 7, Using other operating systems with an SCO system

Installing OS/2 or Windows NT<sup><small>(TM)</small></sup> partitions

Installing OS/2 or Windows NT(TM) partitions

Use Windows NT or OS/2 tools or DOS fdisk to install Windows NT or OS/2 partitions. These partitions should be installed prior to installing the SCO distribution or you will need to back up and reinstall the SCO system. Windows NT and OS/2 rewrite the disk partition table differently than do UNIX, DOS, or Windows 95 systems. This means that partition labels change. Device nodes that refer to specific partitions point to different partitions after Windows NT or OS/2 has rewritten the partition table. This occurs when Windows NT or OS/2 is installed, but not subsequently.

In addition: