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A few months ago, I was using the iMac and opened up spotlight search and there was my first ever kernel panic. It restarted then I logged back in and everything works fine. (The report is at the end)

After a month, I had 2 QuickTime player windows open, a Final Cut Pro window, a Chrome tab with only 8GB RAM. A kernel panic happened and I was able to log back in and opened up chrome and started watching a YouTube video, after a minute or so, another kernel panic happened and another one after reaching the login screen. It kept restarting (it's like the Kernal panic countdown started getting shorter to the point where it wouldn't even reach the login screen. After a few restarting, it showed a ''prohibitory sign'', after 30 seconds it shut off. I tried booting into Recovery mode but no luck. I tried booting into internet recovery, the globe did a quick spin and went into the same apple logo and progress bar and it did a kernel panic. I pressed Alt at startup and selected my BootCamp drive (Windows) it booted with no problems at all.

It's been a few months since my last interaction with Mac OS. Every time I boot I have to hold down alt and select BootCamp. I'm currently writing this post on my BootCamp drive with no problems at all. Video editing works better than Mac OS. The reason I got an iMac is to use mac os and not windows or I could've just got a PC instead. So I would like to fix the Mac OS portion of this iMac.

SPECS: Mac OS Version: 10.14.2 (I think) iMac 5K 27'' 2017 3.8GHZ core i5 8GB Ram 2 TB Fusion Drive Radeon Pro 580 (8GB) Graphics Card

Kernel Panic Report

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  • Standard procedure- remove all non-Apple kexts first. Virtualbox is out of date, Soundflower has been crashy since Mavericks.
    – Tetsujin
    Commented Oct 15, 2019 at 22:38
  • 1
    But I can't access Mac OS. I only have access to Bootcamp
    – A Random Tree
    Commented Oct 15, 2019 at 22:57
  • Try the hardware test, hold D at boot chimes. Run both the short & long tests.
    – Tetsujin
    Commented Oct 16, 2019 at 8:39
  • Ok, it says No issues found
    – A Random Tree
    Commented Oct 17, 2019 at 0:16

1 Answer 1

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First you should try removing any third-party, external peripherals you have connected to your iMac. If the problem persists, and your observations are correct, then you have a hardware error with your iMac. You should contact Apple or the dealer for repairs. You can also use the built-in hardware test to search for errors, but be aware that it only catches a small subset of possible errors.

The reason I say this is that when you boot into Internet Recovery, it is not using any information from your macOS installation or from your hard drive in general. If that kernel panics during boot, you have a hardware problem.

There are many possible reasons as to why this seems to only affect macOS and not Windows in Bootcamp. You could be lucky that you're not hitting the faulty hardware, and it could be that Windows in general does not use that portion of the hardware - or that flaws in that piece of hardware is inconsequential for Windows (or at least you haven't noticed the problem yet).

The actual defective hardware could be many things, but it is often faulty RAM or similar component. The hard drive is not used for Internet Recovery, but there's a small chance that a defective hard drive could interfere anyways - however, in that case you shouldn't be able to run Windows from the same drive.

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  • I went into Apple diagnostics just now and it says No issues found
    – A Random Tree
    Commented Oct 17, 2019 at 0:18
  • It is only able to find a small subset of possible errors.
    – jksoegaard
    Commented Oct 17, 2019 at 10:19
  • So what should I do? You're saying it's a hardware problem but I made a copy of this question on another site and they're saying I should make a USB Bootable drive because I have errors on my drive.
    – A Random Tree
    Commented Oct 19, 2019 at 7:02
  • If your observations are correct, you have an hardware error. You’re saying that you have kernel panics when running Internet Recovery. In Internet Recovery nothing is loaded from disk, so it cannot be a software error. If you have detached all peripherals - then it is a hardware error. Try removing the disk and starting Internet Recovery...
    – jksoegaard
    Commented Oct 19, 2019 at 11:31
  • By disk I mean the physical disk drive(s) - i.e. with a fusion disk like yours it is a hard disk drive and a SSD. They're not easily removable, so if you don't have experience here - I would advise against doing it yourself. Just take it to the vendor or Apple for repairs.
    – jksoegaard
    Commented Oct 19, 2019 at 21:02

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