1 iMac stalls on bootup
Helping a friend with his iMac (emc2639). It was using Mojave at the time, when it froze, so he did a hard restart. Got the Apple logo, but startup bar would only go half way.
I tried all the usual troubleshooting (Disk Warrior, Disk Utility, Drive Genius), all come back saying drive is fine, but I still get the same result (startup bar goes halfway and stalls). Also will not boot into Recovery.
He said I could wipe it, so I did (I had to do this with it as a Target drive, because it also won’t boot from my installers). Got it restored back to Sierra, as that its the last one I can do with it as a Target drive. Same problem, get the chime, Apple logo, and then the bar stalls at halfway point. As a Target drive though, it will run my iMac just fine!! When I hold Option key, I see hd with my install, Recovery partition, and my High Sierra install disk, but it won’t boot to any of them. Wah!!
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Let's run the onboard diagnostics. Reboot the system and hold the D key. Let us know if you got an error code and what it was.
Reference: Mac startup key combinations
- de Dan
It came back saying "No Issues Found" (ADP000).
Then it gave me the "For More Information" stuff, and told me to click on "Get Started" for it to boot into recovery. I clicked on that, and I get the Apple logo, and a progress bar, and nothing is happening on the bar....
- de macguy5150