You're going to have to erase the external drive so you can format it for macOS High Sierra, so make sure to use a different hard drive than the one you used to backup your Mac with. To do so, you're going to need a bootable installer for macOS High Sierra, which will allow you to grab the operating system from the external drive after you've erased your internal drive. You're going to delete the current beta version of macOS High Sierra that converted your disk to APFS and reinstall a version of macOS High Sierra that does not convert Fusion Drive disks to APFS. Step 2: Create a bootable installer for macOS High Sierra How to download macOS updates or installer If you don't already know how to do it, follow our guide. You're going to need to install the latest version of macOS High Sierra installer in full. You're going to re-download macOS High Sierra, but when it gets to the steps where you are asked if you want to install the operating system, close the window instead. Step 1: Download the latest macOS High Sierra install Assistant from the Mac App Store You can also use a flash drive, as long as it's got enough storage space on it. Therefore, you're going to need a dedicated external hard drive with at least 10GB of storage.
The process of reverting your disk format back to HFS+ involves creating a bootable installer on an external hard drive. If you don't back up your Mac before following these steps, you'll lose any data you've created and stored on your Mac since you installed the beta. This is especially important for this process because you're about to delete all data that was added to the APFS Fusion Drive. This is a basic explainer that acts as a companion to Apple's official support document.īack up your Mac. Important: Please follow Apple's support page for precise instructions on how to revert your disk back to HFS+. Step 4: Migrate your data from your recent backup.Step 3: Erase your hard drive and restore from the bootable installer.Step 2: Create a bootable installer for macOS High Sierra.Step 1: Download the latest macOS High Sierra install Assistant from the Mac App Store.Note: This only applies to Macs with Fusion Drives**. If your Fusion Drive is currently converted to AFPS, you'll want to revert back to HFS+ before installing the final build of macOS High Sierra. The final public version of macOS High Sierra will not launch with APFS support on Fusion Drives. During the developer beta testing for macOS High Sierra, the disk format of some systems were converted to the up-and-coming Apple File System (APFS).
0 kommentar(er)
