Loading MS-DOS 5.0 TSRs and Device Drivers into UMBs (72183)


The information in this article applies to:
    • Microsoft MS-DOS operating system 5.0
This article was previously published under Q72183

SUMMARY

The following are device drivers included with MS-DOS version 5.0 that are safe to load into upper memory blocks (UMBs): 
   EGA.SYS          DISPLAY.SYS     ANSI.SYS
   RAMDRIVE.SYS     SMARTDRV.SYS    DRIVER.SYS
   PRINTER.SYS
The following are terminate-and-stay-resident (TSR) programs included with MS-DOS 5.0 that are safe to load into UMBs: 
   DOSKEY.COM       DOSSHELL.COM    KEYB.COM     SETVER.EXE  GRAFTABL.COM
   GRAPHICS.COM     NLSFUNC.EXE     MODE.COM     ASSIGN.COM
   SHARE.EXE        PRINT.EXE       APPEND.EXE   FASTOPEN.EXE
MIRROR.COM will automatically load high (into a UMB). For more information, query on the following words:

MIRROR and UMB and 5.00

MORE INFORMATION

For each device driver (from the above list) that you want to load into a UMB, do the following:

Note: Device drivers are loaded through the CONFIG.SYS file with a DEVICE= line.
    • Make sure DEVICE=HIMEM.SYS is loaded above the DEVICE=EMM386.EXE line and that the line DOS=HIGH,UMB is in the CONFIG.SYS file.
    • Change the DEVICE= line, which is used to load the following device drivers, to DEVICEHIGH= in the CONFIG.SYS file. For example:

    devicehigh=c:\dos\ansi.sys

For each TSR that is loaded in your AUTOEXEC.BAT file and is safe to load into a UMB, add the LOADHIGH (LH) command before the TSR. (LH is equivalent to LOADHIGH.) For example, you can change the line

c:\dos\doskey

to the following:

lh c:\dos\doskey

Modification Type: Major Last Reviewed: 11/19/1999
Keywords: KB72183
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