If you buy an external hard drive and want it to be capable of being your Mac’s startup disk (that is, a bootable disk).. As a pop-up screen would appear, just select the available drive and confirm your choice.. In this guide, we will teach you how to boot Mac into recovery mode and reinstall macOS without losing your data.. Preparations before reinstalling macOS Before we teach you how to reinstall macOS X, there are certain vital things that you need to consider.. As a pop-up screen would appear, just select the available drive and confirm your choice.. Reinstall Mac Os On External Hard Drive Once you are ready, simply take the following steps to reinstall macOS without losing its data.. If you have a catastrophic hard-drive crash that requires you to initialize (format) or replace your boot drive.. Other issues – There could be numerous other issues with your Mac as well that would demand a reinstallation.. If not, then follow these steps to backup your Mac data using Time Machine Simply connect a secure data storage to your Mac and launch Time Machine by visiting Menu > System Preferences > Time Machine.. Chances are that your existing data on Mac might be deleted after the reinstallation.. Here, click on the “Select Backup Disk” so that you can manually choose a location to save the backup content.. Mostly, Time Machine will detect a connected unit and would ask you to take its backup automatically.. You can use an external data source, so that Mac can create a Time Machine on it.. from your Mac beforehand Also, if you think your system has been infected by a malware, then consider formatting it as well.. For our example, we’ll use a USB drive Samsung dvd writer driver mac os x 10.. Mostly, the issue is resolved by visiting Mac recovery mode Corrupt OS – Ideally, your macOS can get corrupt or compromised due to different reasons.. If you want to save your data on the cloud, then take the assistance of iCloud, Google Drive, Dropbox, OneDrive, or any other cloud-based service.. In order to fix it or run troubleshooting, you would need to reinstall the OS Malware attack – A virus or malware can also infect the core function of macOS and would demand a complete reinstallation of the tool.. How to Reinstall Mac OS? Step 1: Backup Files on Mac If you don’t want to suffer from an unexpected loss of your important files during the reinstallation, then you should take a backup of your data beforehand.. Since iCloud is the native cloud storage solution from Apple and an inbuilt Mac app, it is widely recommended.. 100 download Find your target drive in the list on the left and select the “Restore” tab on the right.. Thus, you can consider taking its backup if you don’t want to lose it Disconnect all the attached units like USB drive, SD card, etc.. If you do not want to let go of your important files during the reinstallation process, then consider taking their backup beforehand.. There are different ways to backup data on Mac 1 Backup files Using Time Machine Time Machine is the inbuilt solution to backup data on Mac and restore it afterward.. Following are some of the common problems that force a complete reset on a Mac Firmware issues – Mostly, a firmware issue related to macOS demands a reinstallation of the operating system.. Mostly, it takes 30 minutes to 3 hours to reinstall macOS (the exact time would vary among different OS and system models).. For instance, if your system has been upgraded to a corrupt macOS version or the update was halted in between, then you need to reinstall OS X.. Create an OS X USB InstallerMount your drive or disc of choice to your Mac and launch Disk Utility.. You can easily backup files to iCloud from Mac by following these steps. If you want, you can choose to encrypt your data as well To further customize things, you can visit its “Options” and even enable the automatic backup feature.. It can happen when macOS seems to malfunction and can’t complete the needed operations.. If you want, you can choose to encrypt your data as well 2 Backup files Using Cloud Storage As you know, Time Machine will only take a manual backup of your Mac data to a dedicated storage unit.. It is recommended to not keep it in the direct sunlight or a hot place during the process.. Let’s explore this macOS solution in detail When to reinstall macOS? There are all kinds of reasons for us to reinstall macOS on the system.. Startup issues – Apart from the firmware, there would be a problem with your Mac’s startup or bootstrap program as well.. If you have a similar question in mind, then we have got you covered Just like any other computer, Mac systems can also suffer from unwanted issues at times.. Jun 08, 2020 • Filed to: Solve Mac Problems • Proven solutionsReinstall Mac Os On External Hard Drive“Is it possible to reinstall macOS without losing data?”If your Mac is currently running any version of OS X except El Capitan.. An external hard drive is also an option, although you’d want to specifically for the OS X Installer so as not to waste the entire drive’s capacity.. Therefore, your Mac should be charged enough to complete the installation During the reinstallation process, your Mac might be overheated or restart multiple times.. Your system might download the needed patches and updates during the process Keep your Mac connected to a stable internet connection for a seamless updating.
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