Hello, Every time I boot mac mini 2011 the boot manager appears. I have tried a lot of things but nothing worked. Can you please help me in order to get rid of that screen? If I reboot the mac mini remotely or power goes off and then restarts it stays on that screen that you have to click on the boot disk to load. I don't use bootcamp, I just have two hard disks. I had done clean install it worked for a while but suddenly boot manager appeared again without installing or modifying anything.