DOS=UMB command required
To use the loadhigh command, you must include the dos=umb command in your CONFIG.NT or equivalent startup file. For more information
about the dos=umb command, see the dos command.
Upper-memory-area manager must be installed
Before you can load a program into the upper memory area, you must install the
HIMEM.SYS extended-memory manager. Use the device command in your CONFIG.NT or equivalent startup file to install HIMEM.SYS.
How loadhigh works
If you use the loadhigh command to load a program, Windows NT attempts to load it into the upper
memory area. If there is insufficient space in the upper memory area, Windows NT
loads the program into conventional memory. Windows NT does not indicate which
memory area is used.
Using loadhigh in your AUTOEXEC.NT file
The most convenient way to use the loadhigh command is to include it in your AUTOEXEC.NT or equivalent startup file.
More Information About Loadhigh