Mar 29, 2019 · Select “Reinstall Mac OS X “ from the Mac OS X Utilities dialog followed by the “Continue” button. 4 Select the drive or volume you want to reinstall Lion on and follow the onscreen instructions to complete the installation. Note: This option requires an internet connection in order to download the OS from the Apple servers.

Step 4: Reinstall Mac OS X without Losing Data A confirmation message will appear, informing you about the reinstallation details. Just click on the “Continue” button Subsequently, you will be asked on which disk you wish to install macOS. Simply select the inbuilt disk on your Mac to That’s You can choose from: Command + R Will install the latest version installed on your Mac - won’t upgrade you to the latest version. Option/Alt + Command + R Will upgrade you to the latest macOS compatible with your Mac. Note: If you aren’t running Shift + Option/Alt + Command R (if you are running Oct 09, 2016 · Select Reinstall Mac (or Reinstall OS X) and click Continue and follow the instructions. Before this, my Mac had macOS Sierra installed. So this process will reinstall macOS Sierra. Now you need to connect your Mac to the Internet. You may do so via Wi-Fi: Jun 11, 2019 · Once your Mac has booted, try re-running the ‘diskutil list’ Terminal command, to see whether this has resolved the issue. Installing macOS via Internet Recovery. Even if you can’t repair your Mac’s recovery partition, don’t panic! As long as you have an active Internet connection, you can reinstall macOS via Internet Recovery instead.

Mar 04, 2019 · From here, start the Disk Utility tool, select the Mac disk icon on which to install the OS via the left sidebar and press Format. After setting the Name, Format and Scheme (following the instructions given earlier), click on Format to start formatting. Once the operation is complete, close the tool and press the Install MacOS icon.

Apr 21, 2020 · When to Reinstall Mac Operating System? There are many situations under which Mac OS X needs to be reinstalled such as, damaged file system, Mac operating system crash, severe virus corruption, upgrading or downgrading Mac to latest versions like Catalina, Mojave or even High Sierra, etc. Option-Command-R installs the macOS that came with your Mac, or the closest version still available. Shift-Option-Command-R isn't available. from: How to reinstall macOS from macOS Recovery - Apple Support. If you was a more recent version, download that from within MacOS.

It means to get rid of the current OS on the mac with all the files left on it (after creating a backup of important files of course). There are several reasons while one may attempt to reinstall a Mac. One common reason is erratic operation of the Mac's OS. Some rightfully believe that reinstalling such Mac could easily fix the issue.

Sep 19, 2018 · In the old days, you could reinstall the OS through the DVD that shipped with your Mac. But since new Macs don’t have an optical drive, we’ll use the built-in Recovery Mode to do so. This will work on any Mac running OS X 10.7 Lion or later. Aug 25, 2018 · Mac Secret Trick - How to Clone Mac Hard Drive with Disk Utility HDD SDD MacBook Pro iMac 2010-2019 - Duration: 10:09. Gunner Tierno x Yeezy God 353,070 views 10:09 Open Restore OS X and restore the original OS X. This will restore the OS X version your Mac came with. After rebooting and configuring your Mac open App Store, download and install Mac OS X Mavericks (if an older OS X version was installed previously). May 23, 2019 · Reinstall Mac Mac OS Update How to Defrag A Mac Boot Mac from a USB Drive Boot Force Quit an App on Mac Data Recovery Aiseesoft Data Recovery is the best data recovery software to recover deleted/lost photos, documents, emails, audio, videos, etc. from your PC/Mac.