One of the common themes I’ve heard in my technology circles over the past few years is that macOS has become less stable. ![]() Note that if you keep your Time Machine backups on an external hard drive, it will need to be connected before Utilities searches for it.I’ve been managing macOS in an enterprise environment since 2009, so I was around during the “stable” periods of Snow Leopard, as well as what others would call unstable periods. Look for the most up-to-date Mojave backup you have and use it to serve as your starting position. To begin the backup restoration, you need to choose your backup source. You’ll need to select this option, then confirm you want to restore the backup by clicking Continue. This will open your macOS Utilities, which will have a feature called Restore From Time Machine Backup. To access Recovery Mode, press the Command and R keys while restarting your Mac. The Time Machine app operates when your Mac is set to Recovery Mode. We must remind you to revise the data for anything you want to salvage from Catalina before wiping it out. While most of us don’t have a backup that extends as far back as Mojave, you should always double-check as certain Time Machine backups are old enough to do it. If you have a Time Machine backup saved from when your Mac was using Mojave, you can also choose to reinstall this particular backup to fully wipe out the Catalina OS. Select your external drive that contains the MacOS Mojave installer. The following screen will present a list of startup disk options. As the Mac restarts, hold down the Option key. Otherwise, connect your Mac to the internet, connect the external drive, and restart via the Apple icon in the top left corner. Doing so will automatically install Mojave from an image located on a dedicated partition. If your Mac shipped with MacOS Mojave, restart and hold down the Shift, Option, Command, and R keys simultaneously. Follow the instructions to pick a drive name, file format, and GUID Partition Map. On the following screen, select your Mac’s primary drive and click the Erase button. Next, click the Disk Utility option, followed by Continue. Instead, restart and hold down the Command and R keys until the device boots into Recovery Mode. With MacOS Mojave now installed on an external drive, you’re ready to wipe your Mac’s drive. You’ll need to enter the administrator password when prompted, followed by the Y key to confirm. Press the Enter/Return key after typing the command. Sudo /Applications/Install macOS Mojave.app/Contents/Resources/createinstallmedia –volume /Volumes/YourExternalDriveName Remember to replace YourExternalDriveName with the drive’s actual name that you created in the formatting step. Follow this path:įinder > Applications > Utilities > Terminal Now the external drive needs to be bootable. Select Done when the formatting completes. Name the drive, select the proper format (MacOS Extended or APFS), select GUID Partition Map if available, and then click Erase. Select your drive listed under External and click the Erase tab. Connect an external drive and follow this path:įinder > Applications > Utilities > Disk Utility To continue, you’ll need to format an external drive. The best way to retrieve a copy is to follow this link on a Mac, as Mojave doesn’t show up when performing a search within the Mac App Store itself.Ĭlicking the link should automatically load Mojave’s product page within the Mac App Store app. You’ll need to grab MacOS Mojave from the Mac App Store. Enter the administrator credentials when prompted, then check the box next to the Allow Booting From External Media option listed under External Boot. With Recovery Mode open, click Utilities on the toolbar followed by Startup Security Utility in the drop-down menu. Otherwise, restart the Mac and hold down the Command and R keys until the device boots into Recovery Mode. If your Mac doesn’t include Apple’s T2 security chip, you won’t need to enable external media booting. ![]() To verify that you have this chip, follow this path: Apple button > About This Mac > System Report > Controller (or iBridge). ![]() These devices include Apple’s T2 security chip providing secure boot, encrypted storage, live “Hey Siri” commands, and more. It also applies to the iMac Pro released in 2017 and newer. This step applies to MacBook Pro, MacBook Air, and Mac mini models released in 2018 and newer. If you need help backing up your Mac, follow these step-by-step instructions. ![]() This Mac malware can steal your credit card data in seconds Is macOS more secure than Windows? This malware report has the answerĪpple’s Mac shipments dived more than 40% last quarter
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