Hope i can help!

I followed the magic dosbox tutorials using the latest version of Oracle VirtualBox and windows ocr 2.5.

As it wasn’t a bootable Disk I also used the windows 95b boot disk to start the process in virtual machine.

I had all the ports disabled as per the virtual machine tute.

Had initial issues with part 1 tutorial with initial install of win95.

Had no issues with the part 2 video. I downloaded the drivers as linked in these videos.

Then I was able to easily install Diablo 1 without issues.