This is a heads-up, remember that 32-bit applications won't necessarily stop working with the installation of macOS High Sierra, But it would appear that all applications will need to be 64-bit in a future version of macOS High Sierra, probably around May or June 2018. There are some of the 32-bit applications that we are already aware of:
If you are not sure if an app running on your Apple Mac computer is 32 bit you can check in the About This Mac System Report. You can read more detail in our article Apple Advice For Preparing To Transition To macOS High Sierra. We recommend that now is the time to find replacements for these apps and get used to them. If you have old software you like to use and never update, it’s possible they are 32-bit apps and they won’t work in a future version of macOS. Eventually, 32-bit support will no longer exist in macOS, probably in a version after High Sierra. Also, all apps and app updates must be 64-bit by June 2018. In January 2018 new apps submitted by developers to the App Store must be 64-bit apps. Apple announced at WWDC that the company will start to phase out support for 32-bit software in macOS.SMB and NFS are supported when using APFS. Depending on how you work this could mean that you are unable to connect to your file sharing servers without making changes to them. Volumes formatted with APFS can't offer share points over the network using AFP. Support for AFP connections is going away.For example, a USB device formatted as APFS can be read by a Mac running macOS High Sierra, but not by a Mac running OS X El Capitan or earlier.HFS+ formatted devices running macOS 10.12.6 or later.
Be aware that it is a significant change to underlying systems, and there are compatibility concerns. APFS offers some key improvements and updates.
The Older The Computer, The Less Of the High Sierra Features You Will Have Access Toīut the list above doesn't tell the full story. It would appear it is only the Mac Pro 5.1 machines that are needing the firmware update. We are getting reports (thanks Mick Corey) that when Mac Pro 5.1 owners are installing macOS 10.13 High Sierra that Apple is updating the Firmware as part of the High Sierra install.
Mac Pro Needs A Firmware Update For High Sierra Which Apple Computers Are Compatible With macOS High Sierraįrom the information we have so far, it would appear that every Mac that can run the macOS Sierra can run High Sierra. Experience has told us that upgrades rarely are straightforward, especially OS upgrades as they often have knock-on effects, so wait until you have time to fix the unforeseen problems.
We always recommend that you leave any upgrade until you have some downtime. As soon as brands let us know about their macOS High Sierra compatibility then we will update this article as we did with our macOS Sierra Pro Audio Compatibility article. Absence on this list should be taken as not compatible, initially, information will be scarce.