Two environment variables with the same name

I tried adding an 'Environment variable' with the name "PATH" but I found another entry with the same name. can I change the old one to a different name? I tried openning "GPAC" folder, but didn't understand much and didn't know what to change in the configurations file

2 Answers

Do not remove or rename the PATH variable!

Instead, just edit the existing PATH variable, add a delimiter (which is ; in Windows) and then add your new path.

Would result in something like:

C:\Windows;C:\Program Files\GPAC

Why you shouldn't delete it:

Wikipedia: PATH

This may result in a broken system (I've never tried it), but you won't be able to just run cmd anymore, you'll have to type C:\Windows\cmd.exe because Windows won't know where to look for executables without the PATH variable.

To add multiple path values under the PATH variable separate your values with a semi-colon.