Error Using LOADHIGH (LH) With Third-Party Shell (93923)

The information in this article applies to:
    Microsoft MS-DOS operating system 6.0
    Microsoft MS-DOS operating system 6.2
    Microsoft MS-DOS operating system 6.21
    Microsoft MS-DOS operating system 6.22

This article was previously published under Q93923


If you use the new MS-DOS 6.0 and later LOADHIGH (LH) parameters (/L or /S) with a third-party command interpreter (sometimes called a shell), such as NDOS or 4DOS, you receive the following error message:

Error: Unknown Command "/l:<region1>;<region2>"


MS-DOS 6.0 and 6.2 COMMAND.COM supports two memory specific parameters: /L and /S, which are determined by MemMaker. For example, "LOADHIGH /L:0;1 MOUSE.COM" is a valid command in MS-DOS 6.0 and 6.2.

Third-party command interpreters such as 4DOS and NDOS are designed to replace COMMAND.COM. These command interpreters have to be updated to work correctly with the new /L and /S parameters.


To work around the problem, either use COMMAND.COM for your command interpreter or remove the /L and /S parameters from your LOADHIGH (LH) commands.

For more information or to obtain an update to your third-party command interpreters, please contact your command interpreter vendor.

The 4DOS and NDOS products included here are manufactured by vendors independent of Microsoft; we make no warranty, implied or otherwise, regarding these products' performance or reliability.

Modification Type: Major Last Reviewed: 11/23/1999
Keywords: KB93923