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Hello, I have followed your instructions on my late 2013 rMBP gt750m and have installed reFIND with apple_set_os.efi. I have some problems in the gpu-switch file. I've researched for fixing that (is not recognized as an internal or external command) problem, but I couldn't find any way for a solution. When I run the 'integrated.bat' or 'dedicated.bat' I get the response: C:\Users\Ziya Cakmak\Desktop\gpu-switch-master\gpu-switch-master\windows>gpu-swi tch.exe -i 'gpu-switch.exe' is not recognized as an internal or external command, operable program or batch file. C:\Users\Ziya Cakmak\Desktop\gpu-switch-master\gpu-switch-master\windows>pause Press any key to continue . . . Can anyone help me with this problem ? Thanks for any respond to this message..