macOS High Sierra will be released on 29.6

But, I have one issue Apple is introducing a new file system (Apple File System) which is for (Mac with all‑flash internal storage). Now as much as I know that I have a traditional Hard Drive the rotating one, so will macOS High Sierra covert my hard drive to the latest Apple File System

  • Tomorrow is the 26th ...
    – Solar Mike
    Sep 25, 2017 at 6:40

1 Answer 1


Yes, while APFS is optimized for SSDs you can still use it for HDDs as well.

Installing macOS High Sierra on a HDD installation of macOS Sierra won't prompt you to convert it to APFS, though.

See this quote from Apple.com:

Can I use Apple File System with my existing hard disk drive?

Yes. Apple File System is optimized for Flash/SSD storage, but can also be used with traditional hard disk drives (HDD) and external, direct-attached storage.

  • Ok so this means my Hard Drive will be upgraded to the Latest File System!
    – Sayan
    Sep 25, 2017 at 8:05
  • No your hard disk will not be reformatted to APFS this answer says that you may but I have seen other links saying you won’t be able to
    – mmmmmm
    Sep 25, 2017 at 23:08

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