High Sierra's Apple File System will not support Fusion Drives at launch

high sierra apfs file system fusion drives macos hands on review desktop
If your Mac system has one of Apple’s Fusion caching drives, then you may need to take some extra steps when upgrading to the new version of MacOS — High Sierra. The new Apple File System (APFS) will only support flash-based storage devices at launch, so if your drive, Fusion or no, is currently using APFS, you will need to convert it back.

The High Sierra update for MacOS didn’t blow us away when we first got out hands on it, but it will bring a number of changes to the operating system when it launches on Monday, September 25. One of those is a move toward a more modern file system, APFS. It adds a number of new features, including native support for encryption, support for snapshots and clones, optimizations for solid-state storage and support for many more individual files and folders.

However, while beta versions of the High Sierra update did help convert Fusion drives to the new standard, the actual launch release won’t support traditional hard drives or Fusion Drives.

If you haven’t used the High Sierra beta, or didn’t convert your Fusion Drive or hard drive to the APFS file system, you have nothing to worry about. However, if you did, you need to follow Apple’s instructions on how to downgrade your system back to the HPS+ format, according to Ars Technica.

It’s a somewhat lengthy process that involves backing up your data, removing all data on your storage drive and then reinstalling MacOS with the latest version using the legacy HPS+ file system, so make sure you’re well prepared before starting. Don’t be put off though, Apple’s guide is clear and has easy-to-follow instructions at each step of the process.

Since it’s not clear if or when Apple will make the APFS file system compatible with more traditional storage mediums like the Fusion Drives, it’s probably a worthwhile endeavor to update your system to the new operating system version, even if it doesn’t add much for most users. It will help futureproof your system in a number of behind-the-scenes ways and it’s always possible that you will be able to upgrade to the new file system in the future.


Apple will fix these iPhone X, 13-inch MacBook Pro issues for free

Apple launched free repair programs for the iPhone X and 13-inch MacBook Pro with no Touch Bar. Some iPhone X units are suffering from unresponsive touchscreens, while a specific batch of the 13-inch MacBook Pro is prone to drive failure.

Want to use one drive between a Mac and Windows PC? Partitions are your best bet

Compatibility issues between Microsoft Windows and Apple Mac OS X may have diminished sharply over the years, but that doesn't mean they've completely disappeared. Here's how to make an external drive work between both operating systems.

Recover your beloved data with these great software tools

The best data recovery software isn't always free, but whether you've lost files on a hard drive, SD card, or even physical media like CDs and DVDs, there's a chance they'll be able to get that data back.

How to Install an SSD in a PlayStation 4 or PS4 Pro

SSDs are much faster than mechanical hard drives, which is what the PlayStation 4 and PlayStation 4 Pro come with. Here, we show you how to replace it with an SSD, which will allow you to boot to the OS faster and load games quicker.

Should you buy the affordable MacBook Air, or is the MacBook Pro worth the price?

Though they both share Retina Displays and similar keyboards, there are still some specs differences and other changes which distinguish the new 2018 MacBook Air and MacBook Pro. In this guide, we stack the two up against each other.

The best iPhone XR cases to keep your phone shiny and new

Apple's new iPhone range is the toast of 2018, with beautiful style and more power than you can shake a stick at. But beauty can often be fragile -- keep the damage to a minimum with the best iPhone XR cases.

iPhone users are finding themselves randomly locked out of their Apple ID

According to posts on Reddit and Twitter, it looks like users on Reddit and Twitter having some issues with their Apple accounts. Specifically, it seems as though users are getting randomly locked out of their Apple IDs.

These are the 5 best free antivirus apps to protect your MacBook

Malware protection is more important than ever, even if you eschew Windows in favor of Apple's desktop platform. Thankfully, protecting your machine is as easy as picking from the best free antivirus apps for Mac suites.

Don't know what to do with all your old DVDs? Here's how to convert them to MP4

Given today's rapid technological advancements, physical discs are quickly becoming a thing of the past. Check out our guide on how to convert a DVD to MP4, so you can ditch discs for digital files.

Pocket Casts adds more cross-sync, curation, and Siri Shortcuts

Pocket Casts is a pocket staple for many podcast fanatics. But it's about to get even better with the introduction Pocket Casts 7.0 that adds intelligent curation, Siri Shortcuts support, and a streamlined UI.

Check out 30 of the best iPhone games you need to be playing

The iPhone has some of our favorite games available for any mobile platform. Here are the best iPhone games for every big-name genre, whether you're into puzzles, strategy, or something else entirely.

You can now message businesses straight through Google Maps

Google has been updating Maps with a ton of new features over the past few months, and now it's back with another one -- the ability for users to message businesses directly through the Maps app.

The Motiv smart ring is coming to 20 more countries and physical stores

Remember Motiv's activity tracking smart ring? It's back with a raft of new features that adds biometric identification and token authentication, all on a device that fits on your finger.

The best protective iPhone cases to defend against dirt, dings, and drops

If you’re going off-road or work outdoors, it could be a good idea to invest in a tough case. These are our picks of the best protective iPhone cases for all iterations of the iPhone, from the iPhone XS to the 7.