The pages on this site contain documentation for very old MS-DOS software,
purely for historical purposes.
If you're looking for up-to-date documentation, particularly for programming,
you should not rely on the information found here, as it will be woefully
out of date.
SYS1201
SYS1201Explanation
None of the device drivers contained in the specified file were installed
successfully.
Action
Edit the CONFIG.SYS file to correct or remove the incorrect statement. Then
restart the system.