Macos Sierra Apfs

APFS is the Apple File System. It was introduced at WWDC 2016 and, starting this year, it will replace the existing HFS+ file system on Apple Watch, Apple TV, iPhone, iPad, MacBook, iMac, and Mac Pro. Apple made a developer preview available for macOS Sierra back at WWDC 2016. With iOS 10.3, Apple's released APFS to every modern. APFS Limitations in macOS Sierra. MacOS Sierra places a few limitations on the new APFS file system, as it’s still experimental: Mac startup disks can’t be formatted with APFS, so you can’t use this for your Mac’s system drive. APFS file systems are currently case sensitive only, which means that “file” is different from “File”.

Learn how to clean install your MacBook Pro from USB with macOS High Sierra.
Part 1 – SanDisk Ultra ➜
Part 2 – Bootable USB-Stick ➜ (2:51min)
Part 3a – Fresh Install ➜ (8:11min)
Part 3b – Geekbench Test ➜ (11:52min)
Part 4 – Summary ➜ (14:19min)

# Tutorial Series # Used MacBook – Still Worth It?
Part 0 – Intro used or new? ➜
Part 1 – RAM Upgrade (16GB) ➜
Part 2 – SSD Upgrade (960EVO) ➜
Part 3 – Fresh Install (High Sierra) ➜
Part 4 – 2019 MacBook Pro ➜
Part 5 – Fresh Install (Catalina) ➜
UPDATE – Fresh Install (macOS Big Sur) ➜

# Parts Used #
Used MacBook Pro – on eBay ➜
Corsair Memory – on Amazon ➜
Samsung SSD – on Amazon ➜
Screen Cleaner – on Amazon ➜
Compressed Air – on Amazon ➜
Repair Tool Kit – on Amazon ➜
New MacBook Pro – on Amazon ➜

Geekbench Test Results:

In video 3 of this MacBook Pro tutorial series, you will learn how to create a bootable USB flash drive for installing macOS.

You can easily create a USB install stick for any OS you like, Mojave and Catalina should work as well, more details in this Apple support article: ➜

Keep in mind however that your MacBook needs to support the version of macOS that you are planning to install. In the case of my upgraded 2011 MacBook only up to High Sierra is supported officially.

If you have installed a new empty SSD already, you may need to download a version of High Sierra from another computer, you can find a link for the download here: ➜

Simply download the OS from the App Store, and then follow the steps shown in the video to create a bootable USB install drive.

Once finished you can plug the USB stick into your MacBook Pro and install a clean copy of High Sierra, Mojave, or Catalina.

Make sure to format the drive with the APFS filesystem, because this is optimized for SSD and NVMe media.

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If you install macOS on an additional volume of your startup disk, you can switch between that macOS and the macOS on your other volume, as if each were on a separate disk. And because storage space is shared across APFS volumes, you don't need to reserve space for the new volume. Its size automatically adjusts to fit your content.

What you need

Your Mac must already be using macOS High Sierra or later on an APFS-formatted startup disk. Find out which format your startup disk is using.

You don't need to reserve storage space for the new volume, but macOS needs as much as 20GB of available space to install, depending on the version of macOS. If you don't have enough space, the installer will let you know.

About This Mac includes a storage overview: Choose Apple () menu > About This Mac, then click Storage.

Back up your Mac

It's a good idea to back up your Mac first, especially if you're installing a beta version of macOS. Beta software is software that is still in development, so some apps and services might not work as expected.

Add an APFS volume

Mac Os Sierra 10.13 Download

  1. Open Disk Utility, which is in the Utilities folder of your Applications folder.
  2. In the sidebar, select your existing APFS volume.
  3. Choose Edit > Add APFS Volume from the menu bar, or click in the Disk Utility toolbar. These options are available only when an APFS volume is selected.
  4. Type any name for the new APFS volume, then click Add:
  5. Disk Utility should now show the new volume in the sidebar. The new volume will also appear in the Finder, as if it were a separate disk. You can now quit Disk Utility.

Install macOS on the volume

Choose an installation method:

  • To install a beta (prerelease) version of macOS, enroll in the Apple Beta Software Program and follow the installation instructions on the program website.
  • To install a release version of macOS, you can use macOS Recovery. The keys you press at startup determine which macOS is installed.

When the installer opens and you're asked to choose where to install, click Show All Disks, then select the new volume.

Switch between macOS versions

After installation is complete, you can use Startup Disk preferences or Startup Manager to quickly switch between each macOS:

  • Choose Apple () menu > Startup Disk, then click and enter your administrator password. Select the volume that you want to use, then click Restart.
  • Or press and hold the Option key during startup. When prompted, choose the volume that you want to start up from.

Keep the macOS on each volume up to date

To find the latest updates for each version of macOS, check for software updates, then start up from the other volume and check for software updates again.

Macos High Sierra Apfs Install

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Macos Sierra Apfs File

If your Mac is using macOS Sierra or earlier, or the startup disk is formatted as Mac OS Extended instead of APFS, you can create a new partition instead. The space it occupies doesn't automatically adjust to fit your content, so you must manually size the partition. Learn how to add a volume to a device formatted as Mac OS Extended.