Hold down the Command and R keys on the keyboard and turn on the Mac. Let go when the Apple logo pops up. Choose your startup disk named Macintosh HD by default from the sidebar and click the Erase button. Wait for the first step of the installation to occur. This is a good time to take a break. The computer will restart and continue installing. Let your break continue.
Troubleshooting Mac OS X Kernel Panics
Get a sandwich optional, but encouraged. If you are on Mojave you might think you have to stick to downloading the new software via Software Update, but you can still grab the download via the Mac App Store.
Click on this link to be taken to the Catalina section of the Mac App Store. We attempted to download Catalina from the Mac App Store but that time we were confronted by a message that the requested version of macOS couldn't be found. If you're having problems downloading a point update not a complete new version via Software Update or Mac App Store, you can use Apple's website instead. You can find the latest macOS updates here. To find any software update on the site, just search for it.
Generally, if there's a problem with your software installation it will get stuck on the updating screen, showing an Apple logo with a status bar showing the progress as the software is loading. There may be what people refer to as a 'spinning beach ball'. Alternatively, you may see a white, grey or black screen. On many Macs the screen may be so dark that you might not even be able to tell if the Mac is turned on.
However, you want to be absolutely sure that the installation isn't still running in the background because forcibly rebooting the Mac during an installation will interrupt the installation process and potentially cause you to lose data.
Reinstall from macOS Recovery
It's one reason why it's recommended that you back up your Mac before you install new software. Alternatively, you might find that your Mac gets stuck in the installer with a message that "macOS could not be installed on your computer".
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When we clicked Restart the same thing happened, in the end, the only way we were able to fix it was by starting in Safe Mode and downloading the installer again. Find out exactly what we did below. If your Mac appears to have frozen during the install, it's worth listening to your Mac for signs of life - you may be able to hear whiring - and following the below advice. Before you conclude that your Mac has frozen during the installation, you need to be aware of the following. Sometimes updating the software on a Mac can take a Very. You may be confronted by what looks like a frozen update, but if you leave it for a few hours it could finally get to the end of its task.
Sometimes it's worth leaving the Mac overnight to finish the job it's started. Sometimes updates can take 16 hours or more - especially on the days when Apple releases a new version of its Mac operating system. Remember, the progress bar you see during installation is just a best guess at how long it will take.
In our experience one minute it tells us there will be a two-hour wait, then 45 minutes, then an hour, before jumping down to 20 minutes. Sometimes things get slowed down because the Mac is taking a while to install one file behind the scenes and that's thrown the whole update time prediction out the window. The Mac might have been stuck on 20 minutes remaining for the past two hours, but this doesn't necessarily mean it's not busy trying to install the software. This brings up additional information and more details about the amount of time still remaining for the install.
It may give you a better indication of what files are being installed and the amount of time left. One key thing to remember: Apple indicates how much time is apparently left for an installation If you're positive that the Mac isn't still working on updating your software then run through the following steps:. If the Log screen shows that nothing is happening move on to the next step. It can free up tens of gigabytes of space with a couple of clicks.
Install CleanMyMac X, then launch it — download free edition here. The combo updater contains all the files necessary to install macOS on all Macs, whereas the version downloaded from the App Store only has the files for your specific Mac. How To. Blog How To News.
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Hit Return or Enter to search. Igor Degtiarenko. Writer and blogger at MacPaw, curious just about everything. Did you enjoy this post?