#MAC PRO MID 2012 BOOT FROM USB INSTALL#
#MAC PRO MID 2012 BOOT FROM USB PASSWORD#

So I've tried all of these methods and I can't even get to Disk Utility or any other options. I ran the extensive test, but no issues were found with the hardware.

Boot as a Guest User in Safari-Only Mode.

Currently staring at the blank gray screen as I type this.

Download OS X El Capitan installer on USB drive and use terminal to run createinstallmedia and attempt to go into recovery from there.

The Apple logo appears, the progress bar fills up half-way, then the screen turns black, before it turns blank gray.

#MAC PRO MID 2012 BOOT FROM USB INSTALL#

Install OS X Lion from a different Mac on to external hard drive and attempt to boot from there.

The options for Disk Utility, Reinstall OS, etc never appear. The globe goes away and then the screen remains gray but hangs there indefinitely. The spinning globe appears, asks me to enter the wi-fi password, then the progress bar completes.

Try to use Recovery Mode and Internet Recovery Mode.

Here is what I have tried and what the results are: I bought an external hard drive and a USB flash drive in an attempt to boot from a different source than the internal drive. It's been a few months since then and nothing has changed. I was set to wipe the disk again, but this time it refused to boot entirely, no matter how many times I tried restarting and waiting. But then back in December it started having the same problems (again, no more sound, just the sudden shut downs and difficulty booting). I wiped the hard drive and this solved the problem for a few months.

#MAC PRO MID 2012 BOOT FROM USB PASSWORD#

It would take luck to finally get to the password screen. Then when it would get to the half-way loaded point, it would suddenly shut down and restart.

When it did turn off, the screen would sometimes fill with rainbow colored bands and any sounds playing would get stuck with one note playing over and over, sounding like a stuck vinyl record. Then the computer would function normally for a while before the whole process (but no sound this time) would happen again.

This would happen several times in a row before it would finally boot. When attempting to boot, it would reach the Apple logo and fill the progress bar half-way before restarting. However, a few days later the mac suddenly froze and then shut down automatically. Hi I have a MacBook Pro (15-inch, Mid 2012) that won't boot using any method.Р вЂќР вЂћround 6 months ago, the mac started making loud scratching sounds, but they stopped after a day or so.

Mac pro mid 2012 boot from usb