Once and for all: Does MacOS Mojave work with Fusion Drives?

Discussion in 'macOS Mojave (10.14)' started by liorp, Sep 26, 2018.

  1. liorp, Sep 26, 2018
    Last edited: Nov 15, 2018 at 8:02 AM

    liorp macrumors newbie

    liorp

    Joined:
    Sep 9, 2011
    #1
    What's up, ya'll? :cool:

    I have a 2017 iMac with a fusion drive. I'm currently still running Sierra on it, because apparently, High Sierra's APFS doesn't support fusion drives. I read that Mojave (10.14) introduces APFS support for fusion drives. Thing is, all I've read about this has been rumors, and the official release notes from Apple don't mention APFS or fusion drives.

    My question is: Does APFS and MacOS Mojave actually run well on Macs with fusion drives? Do you have a Mac with a fusion drive and can confirm that everything works and the upgrade process to Mojave was smooth?

    Thank You all!

    Edit: I've done it! The update has been applied successfully and so far, so good.
     
  2. interstella macrumors regular

    interstella

    Joined:
    Sep 29, 2013
    Location:
    Suffolk, England
    #2
    See my thread "Mojave Install Failure". Mojave is clearly working for a lot of fusion drives but it appears to have destroyed mine to the extent that I cannot even boot from a Time Machine backup. Be very wary!
     
  3. liorp thread starter macrumors newbie

    liorp

    Joined:
    Sep 9, 2011
    #3
    Thanks! Really sucks to hear that your fusion drive is ruined. Hopefully you had an offline backup somewhere so your stuff won't be lost forever. I'm curious to see where this thread will go, other people experiences, etc.
     
  4. Cool Pup macrumors 6502a

    Cool Pup

    Joined:
    Jun 18, 2010
    Location:
    Dallas, TX
    #4
    I have a 3TB Fusion Drive that converted to APFS just fine (it took a while to install Mojave though and go through the process, maybe a little over an hour), if that's what you're asking. Never ran a beta of Mojave and was on the latest updated release of High Sierra not using APFS as it wasn't supported. My computer seems to be running slightly better, less animation hiccups just from the early uses of the OS.
     
  5. liorp thread starter macrumors newbie

    liorp

    Joined:
    Sep 9, 2011
    #5
    Interesting. And it looks like you have a 2017 27" iMac just like me (according to your signature). I have a 2TB drive, though. That's cool. Good to know that your update went well. Thanks for the reply :)
     
  6. SoYoung macrumors 6502a

    Joined:
    Jul 3, 2015
    #6
    I think the only fusion drive Mojave won't install or mess it up is the "custom" ones for what I read. If your Fusion drive is the one that came with your Mac I don't think you'll have any problems to install Mojave.

    I have a 2015 iMac with 1TB Fusion Drive and it takes around 40-50 min to install Mojave. The installation was very smooth - in fact, the smoothest one I had since El Captain.
     
  7. liorp thread starter macrumors newbie

    liorp

    Joined:
    Sep 9, 2011
    #7
    A-ha! Yeah, I remember reading on the forums here that some people were having issues with custom fusion drives in Mojave. Mine is the the one that came with the computer. Thanks for the reply!
     
  8. interstella macrumors regular

    interstella

    Joined:
    Sep 29, 2013
    Location:
    Suffolk, England
    #8
    Yes, I have a backup and a duplicate of everything on a MacBook but it's still very inconvenient. Taking it to my "local" Apple store for repair takes up a fair bit of a whole day.
     
  9. barnyard macrumors member

    Joined:
    Jul 19, 2010
    #9
    Wasn't able to update my 2012 iMac 27" with recreated 5TB fusion drive (after old 3TB drive failed) to Mojave. Had to do a massively long restore.

    Not going to retry.
     
  10. chrfr macrumors 604

    Joined:
    Jul 11, 2009
    #10
    I upgraded my 2012 Mini with a Fusion drive to Mojave. No issues at all, and the drive was converted to APFS as expected.
     
  11. Jim Byram macrumors newbie

    Joined:
    Sep 24, 2018
    #11
    I have a late-2013 iMac w/ 3 Tb fusion drive. I'm also using Boot Camp.

    The update to Mojave was accomplished with no issues. The MacOS partitions were converted to APFS.
     
  12. fisherking macrumors 603

    fisherking

    Joined:
    Jul 16, 2010
    Location:
    ny somewhere
    #12
    just installed mojave last night on my collab's 2017 imac, and all is well (so far)...
     
  13. afir93 macrumors 6502a

    Joined:
    Jan 5, 2018
    #13
    Can confirm that it works fine on my 2014 iMac with a 3TB Fusion Drive. No issues. Installation took a bit longer than on my two SSD-equipped MacBooks, presumably because of the conversion to APFS, but I had no issues with it whatsoever. As with everything I highly recommend making backups beforehand just to be sure.
     
  14. tmcnulty1381 macrumors newbie

    Joined:
    Aug 29, 2010
    Location:
    Eastern Massachusetts
    #14
    --- Post Merged, Sep 27, 2018 ---
    I had huge problems on release day, no network, no Bluetooth, s l o w as cold mud.
    Tried all the resets, reinstall etc. Two hours on with Apple Support.
    So been at Apple store since 12:20edt (now 2:16edt). Comeplete erase and install
    From TM backup. Takes a while....
     
  15. liorp thread starter macrumors newbie

    liorp

    Joined:
    Sep 9, 2011
    #15
    Thank You all! It's interesting to see mixed answers and different experiences on different machines. Personally, I haven't upgraded yet. Curious to read about more people's experiences, and see what happens when 10.14.1 gets released.
     
  16. applepuree macrumors 6502

    applepuree

    Joined:
    Aug 15, 2014
    #16
    Yes it works. My iMac (Retina 5K, 27-inch, Late 2015 Custom 3TF Fusion drive) works but I have network freezes which can only be recovered by a re-boot.
     
  17. Nigel Goodman macrumors member

    Nigel Goodman

    Joined:
    Jun 29, 2017
    Location:
    UK
    #17
    I don't know if it was related to Mojave or something else, but I have a Fusion drive failure just after installing Mojave AND doing a CCC full backup. Had to go to Recovery mode and erase the drive and copy everything from the CCC backup. Took the whole day and into the night. Ready the next morning and still OK after a couple of days.
     
  18. ijameson macrumors newbie

    Joined:
    Oct 1, 2018
    Location:
    Australia
    #18
    I have a fusion drive, and get a 69854 disk management error.
    It then kernel panics on reboot.

    My brother has a fusion drive, and had no problems installing Mojave.
     
  19. rcoden macrumors newbie

    rcoden

    Joined:
    Aug 29, 2014
    Location:
    Virginia Beach
    #19
    Yes. Have a 3TB Fusion drive in a 2013 27" iMac, NO issues.
     
  20. detayls macrumors member

    Joined:
    Mar 5, 2010
    #20
    This is my story too. Slower than molasses. No network - ethernet or wifi (missing drivers). I ran back to High Sierra from a Time Machine backup.

    Feel terrified about trying that upgrade again.
     
  21. brofkand macrumors regular

    Joined:
    Jun 11, 2006
    #21
    I have a 2015 5K iMac that came stock with a 1TB Fusion Drive. About 3 months ago I removed the 1TB platter and put in a 500GB Crucial SATA SSD that I had sitting around. I then re-married the Fusion Drive using Apple’s support article on it, so I have a 32GB PCIe SSD that is stock, married to a 500GB SATA SSD aftermarket. I installed High Sierra at that time, upgrade to Mojave worked perfectly on release day.

    The only issue I’ve had is I cannot create a Boot Camp partition. I called AppleCare and this is a known issue that they are trying to fix. I sent them some diagnostics and they’re supposed to be getting back to me within a few days. We will see.

    Mojave otherwise has been fine, though I’d say it’s more of a Mountain Lion than a Snow Leopard. I’m not sure any future release will best Snow Leopard in terms of stability. They should slow down major upgrades, I don’t think we need yearly major upgrades to the OS.
     
  22. Jonathan Swerdloff macrumors newbie

    Jonathan Swerdloff

    Joined:
    Oct 17, 2018
    #22
    It borked my drive as well and in the same way. Couldn't install Mojave, couldn't restore from Time Machine. After 8 hours on the phone and various chats with Apple support, I erased the drive, reformatted it as a Mac OS Extended (Journaled) drive and then was able to restore the Time Machine backup.
     
  23. liorp thread starter macrumors newbie

    liorp

    Joined:
    Sep 9, 2011
    #23
    What kind of hard drive do you have? Apple-made fusion drive or a custom one?
     
  24. Easttime macrumors 6502

    Joined:
    Jun 17, 2015
    #24
    My 2014 Mac mini fusion drive got converted automatically to APFS when I upgraded to Mojave. I didn’t notice anything. Had to check the device’s status to discover the conversion.
     
  25. Jonathan Swerdloff macrumors newbie

    Jonathan Swerdloff

    Joined:
    Oct 17, 2018
    #25
    So far as I know it's Apple standard issue - I bought the mac refurbished from Apple and haven't changed it since I purchased it.
     

Share This Page