That’s fast, and it’s just another indication of the brilliance of Apple’s APFS team. It took approximately two minutes in my case.

The size of the SSD in my MacBook is 256 GB. The results of the conversion will be reported to Apple for QC analysis.

Click Done when that button becomes undimmed. When the conversion starts, you’ll see a progress indicator with all the geeky details if you elect to show them. Converting to APFS cannot be undone.” Click on the “Convert” button.Ħ. “Would you like to convert Your-drive-name to APFS? The box notes: “APFS volumes cannot be used with older versions of macOS. In the Disk Utility Edit menu, select “Convert to APFS.” (It will be dimmed if you didn’t properly select the boot volume.) Disk Utility > Edit > Convert to APFSĥ. (Not the physical drive above it.) In this example, it’s called “John’s-MacBook.”Ĥ. You’ll be dropped into the macOS Utilities.ģ. To do that, select Restart from the Apple menu and hold down the Command and “R” keys (often abbreviated as CMD+R) until you see the Apple Logo or a spinning globe. If the upgrade to High Sierra seemed normal, continue to step #2.Ģ. Of course, compete the installation in the normal fashion. The macOS High Sierra Post-Install Upgrade to APFSġ. The upgrade is non-destructive-you won’t lose any files. If that happened to you, there’s a fix to upgrade to APFS after your installation is done. I’ve seen several instances in Apple’s forum where people forgot to check the box before a hurried click on the Install button. What’s mildly tricky here is that the description of APFS, at the bottom in the smaller print, is isolated from the checkbox above the disk icon. High Sierra (Beta) installer with checkbox for APFS. Because Apple has had stunning success with APFS in iOS so far, you’ll probably want to upgrade your Mac to APFS, especially if your boot drive is Flash-based.

When the public beta of macOS High Sierra is released, you’ll likely have the option to stay with the old HFS+ or elect to upgrade your boot drive to APFS. APFS will enable lots of new technologies on your Mac. For reference, here’s a quick overview of the APFS features. APFS is a modern file system that replaces the extraordinarily aged HFS+, introduced in 1998. One of the notable features of macOS High Sierra is the introduction of the APFS file system.

How to upgrade mac high sierra