![]() ![]() ![]() If so, immediately make a backup and verify. Verify that everything is working as it should.Once you have a stable system, use Migration Assistant to move your data over.Here, step 5, is where we’re going to figure out what’s causing your crashes.Make sure Recovery (hold Command R) and Diagnostics(hold D) works.Install the latest version of macOS (Mojave if you need 32-bit app support Catalina if not necessary).My advice is to clean things up so you’re working on a solid footing. Do a clean, proper install of macOSīased on what you described, it sounds like your install is a bit of a bodge. This will ensure that you download and use the correct diagnostic utility for your Mac. Boot your computer while holding Option D (obviously you need an Internet connection). Your Mac has the ability to boot from Internet Recovery it should also have the ability to boot Internet Diagnostics. Secondly, it’s well known that Apple’s diagnostics lose usability with each subsequent version, so “upgrading” to a later version will actually give you less useful diagnostic data. If your Mac was introduced before June 2013, it uses Apple Hardware Test instead. The Apple-supplied OS upgrade does not contain AHT. Catalina doesn’t upgrade it to Apple Diagnostics.Īpple tells us in their support document How to use Apple Diagnostics on your Mac: I have a MacBook Pro (not Air) & I NO LONGER have the OS 10.5 disk that came with my computer since unfortunately I threw it away after Apple sent the OS 10.6 Snow Leopard disk. For example, a Mid 2012 MacBook Pro which is capable of running Catalina still uses AHT. Even when you upgrade, Apple doesn’t change your diagnostics. You can’t “willy-nilly” change them because you feel one is better than the other. No! Don’t do this! First off, Apple has diagnostic procedures specific to their machines. I followed the instructions in this post (Replacing "apple hardware test" with "apple diagnostics") but the problem When that happens, you’ll have the devil’s own time trying to pinpoint the cause of your troubles. If you’re missing things, this was an “out of band” re-install (meaning non-standard). Booting from Recovery, wiping the drive and installing macOS will leave a pristine, fully functional version of macOS on your drive. If it’s missing, it calls into question how you did said reinstall. When you reinstall, Apple Diagnostics will get reinstalled as well. I attempted to run Diagnostics, but it did not work and I found I had lost the “.diagnostics” folder when I wiped the hard drive.
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