My computer automatically installed the update overnight, and in the morning, my screen was showing circle slash. This happened again the other day with the recent Mojave 10.14.2 update. In the past, the only way I was able to get around the problem, is by re-formatting my HD, installing latest version of Mojave OS, and then migrating all my data from my Time Machine backup. doing the NVRAM reset (problem persists).attempting to start in safe mode (problem persists).specifying the startup disk (problem still persists).I’m still able to boot into recovery mode ( command- R at startup), however running disk repair on my MacBook HD does NOT solve the problem. Rebooting still produces a prohibitory symbol. I have a MacBook pro running MacOS Mojave.įor the past year or so, every time a new MacOS update rolls out, and is attempted to be installed on my MacBook, it ends up displaying the circle slash (Prohibitory Symbol). SOLVED: MacBook Will Not Start Up After macOS Update It feels like there is something wrong with the Windows Server (which is mentioned in the above Little Snitch article) and that there has been an issue building the kernel while updating Little Snitch but I'm not sure how to diagnose further and/or fix it. Removing the Little Snitch kext file via this link:.Starting in verbose mode (no useful info I can make out).
After a few seconds a see the cursor blink briefly but then then it reverts to a blank screen and the process starts again (with the spinner showing, curosr blinking briefly etc. If I try to boot in safe mode, the same thing happens, but instead of a completely blank screen I see the white loading spinner (on black background). Once I've entered my password the loading bar appears and gets to about 75% before the screen goes blank (black but with backlight), with no cursor.
I boot up and can enter my password (I'm running FileVault so I'm not sure if this is the HD unlock login or actual account login). After updating to the latest Little Snitch and restarting my machine it now fails to boot. I have a Macbook Pro 2018 15" running Mojave (latest update).
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