Enable case sensitivity for filenames under DOS

This is just ... for fun.

As you know, MS DOS didn't make any differences between MyFile.txt, myfile.txt, MYFILE.txt since DOS isn't case sensitive.

If you don't believe me, just start notepad, type a few characters and save your work once as MyFile.txt then as myfile.txt then as MYFILE.txt. Then look to your folder, how many documents did you have ? Just one.

Under Linux, you would have had three files; not under DOS.

What if we asked DOS to change its ways?

To do this, you'll need to start Windows PowerShell as an admin.

Then jump in the folder where you want to enable case sensitivity. Let's say in C:\Temp.

In your PowerShell console, now start fsutil.exe file setCaseSensitiveInfo . enable and press Enter. After a few seconds, the change will be made.

You can now use MyFile.txt, myfile.txt or MYFILE.txt as filenames; you'll have three files now; just like under Linux.

If you don't believe me:

To revert your change, run fsutil.exe file setCaseSensitiveInfo . disable but, first, you'll have to remove at least two files because DOS will prevent to disable the feature if this will give conflicts.