To install Catalina on another Mac, first make sure it's powered off, then simply plug in the USB installer you created and turn the Mac on. If you are using a laptop, make sure it is connected to a power source. My question is how do you re-install your apps, documents, and data without getting all the “crap” that has accumulated over the years. Zoom application permissions Due to increased security and permissions with Mac OS 10.14 Mojave and 10.15 Catalina, you will be prompted to authorize the Zoom Desktop Client to use the microphone, camera, and on Mac OS 10.15 Catalina, screen recording. Mac computer stops working, or your Mac won't turn on at all. replaced the drive in your age-old machine, How to downgrade from macOS Mojave to macOS High Sierra, Factory reset MacBook Air and other Macs with macOS, How to create a macOS Catalina USB installer, export the data or back it up before continuing. For a true clean install, starting from scratch means literally re-installing all applications onto the Mac, either from the Mac App Store, or downloaded from their respective developer websites. How do I use Disk Utility to reformat my hard drive? New drive won’t show up in the installer until it’s Mac format. Here are three easy steps: Step 1. Simply drag this folder icon to your Macintosh HD to install. After DU loads select your startup volume (usually Macintosh HD) from the . This will begin the process of clean installing MacOS Catalina onto the Mac, it may take a while to complete. Select your new hard drive from the sidebar. The Catalina 10.15.6 was a big update at around 2.8Gb! it said that the original drive was severely damaged but it was able to recover some files. I left it to download and install overnight because it took about 16 hours. Reproduction without explicit permission is prohibited. Because the Mac was erased during this process, there will be no personal files, no apps, no preferences, no settings, no customizations whatsoever on the Mac, it will be as if it is new, which is why this is colloquially called a “clean install” in the tech world. Release the key when a startup disk selection screen appears. Were you able to successfully perform a clean install of MacOS Catalina? Why can’t I erase my disk utility? Select the Recovery HD and click on the downward pointing arrow button. Select Disk Utility from the main menu and click on the Continue button. For personal data that is kept within particular applications, it’s a bit trickier and depends on those individual apps and where they store stuff. Open the App Store app on your Mac. Then click “Erase”. After a short while, the macOS Utilities window should appear. Apps are best reinstalled from either the Mac App Store, the developer websites, or the installation medium they came with. When the problems are severe enough, you may be willing to trade in your apps and data for the peace of mind of a clean slate. Be sure you have a complete backup of your Mac and all important data made before proceeding. The Macintosh HD will be grayed out, and you cannot repair it but only back up files. Again, the problem is not the creation of two volumes: “Macintosh HD,” and “Macintosh HD - Data.” The problem is that a second “Macintosh HD - Data” volume appeared about a day after a clean install on a new Mac. check out this troubleshooting guide for help addressing macOS Catalina problems, How to Install MacOS Catalina Public Beta, How to Create a MacOS Catalina Beta USB Bootable Install Drive, How to Setup iPhone or iPad for Kids with Screen Time Limits, How to Enable or Disable Optimize Mac Storage. In fact, Macintosh HD - Data (in macOS Catalina and macOS Big Sur) or Macintosh HD not mounted problem is quite common on Apple computers. Use disk utilities from the Mac OS installer to format the new drive in a Mac format. However, I'm going to show you how to avoid this one simple mistake that so many of us make when installing a new SSD. "Macintosh HD" is Read Only - MacOS Catalina 10.15 HaydenMeade. Download and Install the SFWare Partition Recovery tool on your system. This won’t let you install Linux on your mac, let alone boot from a USB stick. In the “Startup disk selection” screen, use the arrow keys to select your main hard drive (not the MacOS update). In this video I show you how to reinstall MAC OS X on your apple computer. Copy the main folder or directory to the root of your Macintosh HD From the first step a Finder window will appear containing a folder icon named main. When I ran diskutil list command, the deleted Macintosh HD showed up as … … Don’t forget to install the Security Update packages that get released for it from time to time. © 2020 OS X Daily. Make sure you're connected to the internet through Wi-Fi. ! If you can’t find it, from the menu bar select Go > Go to Folder. You can review our privacy policy for additional information. Step 2. . You can also find it by using Spotlight (press Command + spacebar and start typing the name of the OS) Click on the installer.