So, i am making a batch file OS project in Windows, and i want to make it run under DOS. I want to make my own custom distribution of DOS that i can use as a shell of my project. I tried to find a clean source code, but no avail. How i can do it?

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    The very first google result for freedos is freedos.org and the source code is available there. In what ways is this not sufficient? – ChrisInEdmonton Nov 26 '15 at 13:16
  • How i can customize it? I mean, change the name, add some commands to system? – HackerGamerLV Nov 26 '15 at 13:23
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    you can customioze DOS but don't call it your own distribution. We don't use such nonsense terminology in MS/DOS/Windows land. superuser.com/questions/908915/…. Notice that I got the game Xenon 2 running, if you scroll down my answer to that question, you see a pic. – barlop Nov 26 '15 at 13:40
  • The source code for MSDOS 1.1 and 2.0 are freely available here. – Kody Brown Nov 26 '15 at 18:46
  • It seems to me that you don't really want to create a full DOS (Disk Operating System), but maybe you just want to create your own custom user interface in a dos window/command prompt. Is that the case? Just curious.. – Kody Brown Nov 26 '15 at 18:48

FreeDOS has source code available.

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