Re: DOS error 21 when executing Win32s programs

[Michael Verne/VENTANA <Michael_Verne/VENTANA.ITP@lgate.vmedia.com>]

".....I've got a 755C.  I want to be able to use a few 32-bit windows
applications, but everytime I try and execute one, I get a "DOS error 21"
message in a window.  Does anyone know what causes this?...."
 
~~~~~~~~~~

I don't know how this relates specifically to thinkpads, but I've seen this 
error on several of our machines, including the thinkpads, when first 
installing 32-bit apps.  What I've done is turn on 32-Bit File Access in 
Control Panel, 386Enh, and set the smartdrv.exe windows parameter to 512 (if 
there's no parameter set, I think it defaults to 128) in the autoexec.bat:

C:\WINDOWS\SMARTDRV.EXE 1024 512

The first number is the DOS buffer size & the second is the Windows buffer.  
Without this parameter, or with it set to a lower number, I've seen "Unexpected 
Dos Error", "DOS Error 21", and "EMM386 has detected....... reboot your 
machine"  errors. 
Hope this helps.

Michael J. Verne
michael_verne@vmedia.com
Systems Analyst, Ventana Communications Group, Inc.