I have been trying forever to get Diablo 1 Belzebub working on Windows 10 and now I have finally found something that might work but I am unsure how to do this step of the process:
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Open up notepad, and type the following batch code into the editor:
start /affinity 1 Diablo.exe
(OR, if you are running a mod, or hellfire)
start /affinity 1 (name-of-modded-executable.exe)
Save the file to your C:\Diablo directory(or wherever you installed it), and if you want to, make a shortcut to it on your desktop.
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If anyone can explain this to me or provide a better method for fixing Diablo 1 crashing after I make a character, I would very much appeciate it. Thanks!