IsStac 1.3 -- Is the specified drive a virtual Stacker volume?

  IsStac C:
  If Errorlevel 3 GoTo SyntaxError
  If ErrorLevel 2 GoTo WontWorkInDESQview
  If Errorlevel 2 GoTo SyntaxError
  If ErrorLevel 1 GoTo IsStackerDrive
  GoTo IsOrdinaryDrive

In debugging you might just use to view the errorlevel result.

echo %ERRORLEVEL

Copyright Roedy Green Canadian Mind Products.  May
be freely distributed and used for any purpose
except military.  Warning: this utility does not
work under DESQview.  MASM/Optasm source included.
Version 1.3 just embeds the new address and phone
number.

Works under DOS, and DOS emulation in Windows 3.1
and Windows 95/98, OS/2 but not NT.

This utility is of use only to old DOS and
Windows 3.1 machines.