I have tried making a bootable USB using both Etcher (Mac) and Rufus (PC) and neither will boot, in fact the USB boot drive created by Etcher results in a drive that is not readable at all - on any machine! I've tried using an external powered USB hub just in case the onboard USB sockets are not initialised properly/fully at boot up but that didn't work either. My old MacBook is pretty much useless for anything else as it cannot be upgraded/updated to run the more recent OS or Apps so I thought this would be a good use for it rather than consigning it to the scrap bin.

On many MacBook Pro models produced before 2016, the power button is located in the upper-right corner of the keyboard.Has anyone had any success getting Ubuntu (Astronomy) to run on a MacBook 2006 running a 2 GHz Intel Core Duo with 1GB of DDR2 SDRAM? - it's one of those nice, solidly made white ones Apple use to make. In those cases, you can force the computer to restart by holding down the power button for around 10 seconds. Sometimes you need to restart, but your MacBook Pro has frozen up or become unresponsive. RELATED: How to Shut Down Your Mac Using Terminal Force Your Macbook Pro to Restart

When it asks for your password, type it and press Return again. In the Terminal window that appears, type sudo shutdown -r now, then press Return. You can also restart from the Terminal app if you have an Administrator account on your Mac. RELATED: How to Restart Your Mac Restart a Mac Pro From the Terminal When the process is complete, log in with your user account to use your Mac again. Your screen will go black momentarily, then you’ll see the Apple logo appear as your Mac reboots. If confirmation messages appear, click the “Restart” button.

Click the Apple logo in the upper-left corner, then choose “Restart.” Apple makes it easy to restart your Mac Pro using a menu located at the top of your screen.

2006 macbook pro boot from usb