![]() In the Startup Manager, you'll see the available boot drives. Remember to press down on the Option key while the Mac boots. Now you can boot the Mac Sierra from your High Sierra by following the steps below: Terminal will then copy the macOS Sierra installer file to your drive. Once your drive is erased, your Mac may ask you if you want to use the drive for Time Machine. You'll be informed that it will erase your drive. Sudo /Applications/Install\ macOS\ Sierra.app/Contents/Resources/createinstallmedia -volume /Volumes/Untitled -applicationpath /Applications/Install\ macOS\ Sierra.appĮnter your user password and Return. Copy and paste the following command to the prompt. Step 3Create a boot disk with TerminalĬonnect the USB or hard drive to your Mac and launch Terminal. Change the name of your drive to Untitled. You can use a USB flash drive or an external hard drive with room for the installer software. ![]() ![]() Step 1Download macOS Sierraįirstly, you should download the previous macOS Sierra installer from Mac App Store. You can back up your data with iCloud or Time Machine. Note: Before getting started, you are suggested to back up your Mac data as it may clean your startup disk while dual booting. In case you don't know how to creat a bootable macOS Sierra installer drive, we collected the whole steps here to show you how to carry out a Mac dual boot with ease. By choosing this method, you need to install a previous macOS version supported by TunesKit DRM Media Converter, such as Sierra (or lower) on an external hard drive. This solution is highly recommended as it's much easier for even beginners. Create Dual-boot macOS via External Drive Or alternatively, you can follow some other ways as below to make TunesKit work again on macOS High Sierra so that you can remove DRM from iTunes movies and TV shows without any problem like before. Unfortunately, no fix has yet been found due to the technical difficulty.īefore it's permanently fixed, you are suggested to downgrade your macOS High Sierra to Sierra or lower versions in order to use TunesKit properly. For Mac users who have upgraded your macOS to the latest 10.13 High Sierra, you may noticed that the Mac version of TunesKit DRM removal tools, including the DRM Media Converter and iBook Copy can't seem to work properly as expected.
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