![]() In regard to how CCC will work with your APFS-formatted volumes, this CCC knowledgebase article aims to answer all of the questions you might have on the subject:Įverything you need to know about Carbon Copy Cloner and APFS Apple offers a couple helpful APFS-related knowledgebase articles here:Īpple Kbase HT208018: Prepare for APFS in macOS High SierraĪpple Kbase HT208020: Upgrade macOS on a Mac at your institution This change will be mostly transparent for many users, but if you have several disks, complex partitioning, or if you're just curious how these things work, you might want to take a moment to learn more about this new APFS filesystem. Perhaps the biggest change in macOS High Sierra is the new filesystem that Apple will be applying to your Mac's SSD/Flash-based storage upon upgrade. Preparing yourself for the High Sierra upgrade Before you pull the trigger on the upgrade, detach that external disk from your Mac and set it aside.įor more detailed advice on preparing for the upgrade and instructions on how to downgrade, check out this CCC knowledgebase article:īest practices for updating your Mac's OS. Before you apply the upgrade, we recommend that you establish a bootable backup of your current OS on an external USB, Firewire, or Thunderbolt hard drive, then verify that you can boot your Mac from that backup disk. We'll have more documentation and videos coming in the next couple weeks about CCC and APFS, so stay tuned! Preparing your Mac for the High Sierra upgradeīefore you upgrade to High Sierra, it is imperative to understand that downgrading to your previous OS will be impossible without a bootable backup of the previous OS. As soon as Apple posts a "Golden Master" build of High Sierra, we will proceed with our last push to update documentation, screenshots, videos, etc. We've posted an update to CCC 4 that fixes a couple cosmetic High-Sierra-specific issues, and we're preparing to release an update to CCC 5 with the same fixes, plus more improvements that are specific to High Sierra. We've been busy testing High Sierra over the summer, and I'm happy to say that we're ready for it. ![]() On Tuesday Apple announced the release date for macOS High Sierra – we can expect to see it on the App Store on September 25. ![]()
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