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I have a MBP 2011 from a customer and I am trying to reinstall the system however trying to use ALT to select the PEN DRIVE with macOS installation is not working. The CMD + R is not working too. I already tried reseting the SMC and it didn´t help at all. However I tried resetting PRAM and it doesnt work out. What can I do?
You mean Option Key don’t you? Reference: Mac startup key combinations Command + ‘‘R’’ may not work if the drive is not prepped (new drive). The newer firmware will automatically jump to internet recovery when you press Command + ‘‘R’’ so you will need a network connection to the internet via Ethernet or WiFi. Did you replace the HD SATA cable yet? This is a common issue in this series.
