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How to install OS on old Macbook just showing blank screen


New member
Jan 9, 2019
Hey there I hope you can help me. I have no idea what I am doing - am giving my old 2009 macbook pro away and was trying to erase everything. I seem to have erased too much as the OS seems to have gone too. When I switch on I just get a blank white screen. I have tried rebooting and holding down ALT+COMMAND+R but that doesn't do anything. Any suggestions please? Thank you