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Error Install UniBeast!

I have successfully installed sierra with clover installer. But second installation ( setup apple id, passwords etc.) not working. Error: macOS could not be installed on your computer. Unable to unmount volume for repair. Quite the installer to restart your computer and try again. Please...

Hello, I installed succesfully mavericks with unibeast , everything is working fine except iMessage. When i try to log in i get the following error message: "Could not sign in to iMessage An error occurred during activation. Try again." I thought its just a problem with apple servers , but not...