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. Have an iPhone, iPad, or Apple Watch? You need to update it right now But your MacBook can go all the way to Monterey, which is fairly stable at this point, so you could also just go to that.How to take a screenshot on your Mac: the best methods in 2023īest Prime Day MacBook deals: Save on MacBook Air and MacBook Pro But Catalina is at least still getting updates. ![]() It didn’t, it still came on and still got super hot. I even started leaving the lid open, thinking that the increased airflow would help. I’d go to my MacBook and find it was scorching hot with the screen displaying some weird error screen. But the waking up wasn’t the concern, the concern was that whatever was causing it to wake up ran the CPU at 9000%. My model doesn’t have “power nap” or anything of the sort. The issues at hand were that the MacBook would wake from sleep randomly. Like, problems so severe it took high level Apple Support, several reinstallation’s of macOS, a deep diagnostic that Apple engineers were going to look at and the problem still wasn’t resolved until Catalina came out. Mojave gave me major problems on my mid-2012 MacBook Pro.
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