From High Sierra, I was prompted to upgrade to Mojave; did that, successfully completed (I guess, no errors were reported or something, but I don't remember if I restarted my laptop at that point. Moreover I didn't check if the version was upgraded in "About this Mac".).

Next day, I try to start my laptop, nothing... Eventually it says there was a problem finding the launcher or something. Laptop started successfully (phew!), and High Sierra is still installed.

Now, it asks me to upgrade to Mojave again, but I am afraid. What are the risks in accepting to upgrade? What should I do? Maybe I could stick to High Sierra...

  • Mohave is a big download and, depending on your connection, can take a while. Even a point update can take 30 minutes on my 15Mb connection. Is it possible you downloaded it but didn't let it install at that point?
    – JRobert
    Dec 16, 2018 at 13:42
  • @JRobert, I gave it all the time in the world..
    – gsamaras
    Dec 16, 2018 at 14:12

1 Answer 1


What should I do?

If it were me, and my machine was running at this point, I'd backup the disk, then separately backup my home folder, and put those media aside. Then I'd redo the upgrade.

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