Followed the following steps and now trying to reinstall OS X but no disk appears.
Oct 10, 2018 At the “macOS Utilities” screen, select “Reinstall macOS” Choose “Continue”, and then agree to the terms when asked Now at the drive selection screen, select “Macintosh HD” (or whichever drive you want to reinstall macOS Mojave onto) and choose “Continue” to begin the reinstallation process for macOS Mojave.
You can use these steps to erase the files on your startup disk and install a new copy of OS X:
MacBook Pro
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With macOS Catalina officially released, more and more people jump on the bandwagon to try its expanded features, such as screen extension with an iPad or the new Apple Podcasts app. And why not?
The problem is that it might not always work as intended. Glitches in macOS Catalina are commonplace — even fully released operating systems like Mojave or High Sierra could freeze and crash from time to time. No software is immune.
But what do you do if this case? The surefire way to deal with jaded performance is to reinstall mac OS Catalina altogether. Read through our guide below to learn how.
It’s important to note that when you reinstall macOS Catalina the process simply updates the operating system and doesn’t affect any files on your hard drive or user files or even settings. That makes reinstalling principally different from performing a clean install, which erases everything.
Here are the proper steps to follow to reinstall mac OS Catalina.
By default, the best thing you could do before making any significant changes to how your Mac works is to back it up. Backups are just like saves before encountering challenges in video games — represent the point you can always come back to.
There are lots of great backup solutions on the market to suit every need. If you don’t have the time to search for something specific, your Mac features a decent native option — Time Machine.
To get Time Machine started:
There’s nothing better than the feeling of a brand new Mac with a brand new macOS. If only the latter is new, the experience could be subpar. Trying to get the most out of macOS Catalina on your older machine might be a challenge. But don’t hurry to your local Apple Store just yet — not all is lost.
Just like the dust behind your couch or on the top of your kitchen cupboards, small bits of system files, caches, and hidden libraries tend to aggregate over the years and never get deleted, eventually slowing down everyday processes. While it’s possible to clear out some of them manually, others require specific technical knowledge and lots of time.
Luckily, there’s a professional automatic solution available — CleanMyMac X. Optimizing behind-the-curtain processes on your Mac with CleanMyMac X is no more difficult than clicking a single button:
Now your Mac is free of all the pointless log files, user caches, language files, old updates, and more. Which directly translates into improved processing power, memory usage, and response time. At last, your Mac is ready to take full advantage of macOS Catalina.
With your Mac in top shape, it’s time to get that macOS Catalina download link. Surprisingly, you won’t find it in Software Update or even App Store (where it used to be in macOS High Sierra).
The correct way to reinstall macOS Catalina is to use your Mac’s Recovery Mode:
The reinstallation process will start shortly and roughly take 30 minutes. When complete, your Mac will start up as usual. No files should be lost, but it’s always a good idea to check CleanMyMac X’s Applications Updater to see if you can improve compatibility of the new macOS with any of your existing apps:
Finally, in case you notice any files or apps missing, or settings misconfigured, you could open up Time Machine to restore a specific folder or the whole backup from the step one:
If you decide to restore the whole backup, make sure to then repeat the whole process to optimize your Mac and reinstall macOS Catalina as detailed above. The good thing is that more often than not the reinstallation works wonders right from the first time.
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