After I started testing with ESXi 5.5 (read first post here), I couldn’t get the Mac Pro to boot from the USB key as the ESXi OS wasn’t being seen in System Preferences -> Startup Disk. The way to get around this is to:
- Reboot the Mac and upon hearing the Mac startup ‘chime’ press and hold the ‘option’ key (also called the alt key, which is between the command key and control key on Apple keyboards). After a few seconds you should see a grey background with a mouse cursor. You will then be presented with the bootable partitions attached to the computer, like this:
- Press the left / right keys or use the mouse to select the OS you would like to boot from. If you press the arrow the system will boot, but only for one boot or restart.
- To make this option the default behaviour, press and hold the control key and you will see the straight arrow turn into a circular one, as in the image below. Keep pressing control and then hit the arrow, the system will boot AND will boot into the same OS from now on, or until changed either in the boot loader again or from System Preferences -> Startup Disk.
- A little tip when rebooting the ESXi server – remember to shut down all guest VMs and enter ESXi’s maintenance mode before rebooting through the controller application/web interface – we noticed the server booting and hanging toa black or grey screen when this wasn’t done and the server was rebooted incorrectly!
About Mac Repair South London:
Mac Repair South London is one of London’s most established and well known Apple Mac Repair companies, providing quality Apple Mac repairs for London and the South-East.
Call for a free quote for any of your computer hardware or software maintenance for small and medium sized companies and we’ll be more than happy to assist!