iMac 2019 Mojave bootcamp stuck at partitioning disk

Discussion in 'macOS Mojave (10.14)' started by zerozoneice, Jun 10, 2019.

  1. zerozoneice macrumors regular

    Joined:
    Jun 26, 2013
    #1
    iMac is brand new, 2TB fusiondrive, Radeon Pro 580X.
    I cannot seem to get past "partitioning drive..." it takes ages and nothing moves past half-way or so.
    Tried 3 different Windows 10 ISOs, same thing.
    Only thing that works is to delete the OSXReserved and BOOTCAMP partitions manually in diskutility and restore the 2TB fusion partition :)

    any ideas pls?
     
  2. 8CoreWhore, Jun 10, 2019
    Last edited: Jun 10, 2019

    8CoreWhore macrumors 68020

    8CoreWhore

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    #2
    Google - "fusion drive bootcamp mojave" - there are others complaining... but I didn't read through them to see if there's a fix.
    I just ordered the 2019 last night, I really wanted to get it from store today, but I have to wait a few days because SSD configs are not in stores, nor track pad option. :cool: But I just didn't want the fusion drive. Consider swapping it out if you can't resolve this.

    (I ordered through apple education store, shipped to home, 10% discount, ssshhhhh) I ordered OWC RAM (best warranty and service) $205 for 16GB x 2 total 40GB

    I have a 6TB USB 3 drive I'll plug directly in the back for plenty of storage. I hate to be "that guy" and suggest returning it, but I want you to be happy for years to come.
     
  3. zerozoneice thread starter macrumors regular

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    Jun 26, 2013
    #3
    yea i saw them as well but no solution described.
    i'm on chat now with apple support, they are aware of this issue, many reports so far.
    it seems related to fusiondrives.

    i'll post the solution if it works for me whatever they suggest me to try out.
     
  4. 8CoreWhore macrumors 68020

    8CoreWhore

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    #4
    I edited above...
     
  5. zerozoneice thread starter macrumors regular

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    Jun 26, 2013
    #5
    thanks whore :))))))))
    apple gave me some steps to try in recovery but i told them straight: the experience of a new machine is killed right from the start, what a pity. Apple engineers are aware of the fusion drive issues and are working to fix it.
    I'll report back after i come back from recovery...
    --- Post Merged, Jun 10, 2019 ---
    support steps didn't help, i'll try more tomorrow...i can't believe this crap.
     
  6. 8CoreWhore macrumors 68020

    8CoreWhore

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    #6

    And it's been like this for awhile.
     
  7. zerozoneice thread starter macrumors regular

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    Jun 26, 2013
    #7
    i suspect the culprit is APFS, which is the default FS on Mojave even on Fusiondrives.
    i'll convert to HFS+ and retry bootcamp later tonight.
     
  8. zerozoneice thread starter macrumors regular

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    Jun 26, 2013
    #8
    could this be planned obsolence by apple?
    force users into dumping fusion setup in favor of ssd, if they want to do windows?
    issue's been for a long time, starting with the "3TB fusiondrive bootcamp" saga....
    could also be an indicator that next iMac will be ssd-only, that is if they continue with intel and windows via bootcamp still an option.

    remember windows had an ARM build a while back ;)
     
  9. zerozoneice, Jun 11, 2019 at 6:01 AM
    Last edited: Jun 11, 2019 at 6:12 AM

    zerozoneice thread starter macrumors regular

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    #9
    ok so issue is reported all over the net, but no official response from Apple yet:
    https://discussions.apple.com/thread/250408781?page=2
    https://discussions.apple.com/thread/250393882?page=2
    https://discussions.apple.com/thread/250380776?page=2
    https://discussions.apple.com/thread/250371879
    https://discussions.apple.com/thread/250377859
    etc....

    So basically if you ever want to install windows on bootcamp, stay away from fusion drives and Mojave.

    I'll revert to HFS+ later today using this...hopefully BC works on HFS+ and Fusiondrive
    https://www.paragon-software.com/home/apfs-hfs-converter/
     
  10. treekram macrumors 68000

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    Honolulu HI
    #10
    There is another thread on this forum where the OP was running Mojave HFS+ fusion (with Boot Camp) and the system response was slow to the point of being unusable. This was on a 2012 Mini, which is dual-SATA so maybe it will work better on the iMac with PCIe/SATA - I don't know. If you try this, report back on how it works. For the OP, the Mojave installer would not convert the HFS+ fusion drive to APFS fusion until the Boot Camp partition was removed.
    https://forums.macrumors.com/threads/mojave-on-mac-mini-2012-not-working.2183991/#post-27443917

    Also be aware that people with Mojave HFS+ (non-Fusion) SSD systems report that Mojave OS updates won't run on HFS+ SSD systems.
     
  11. zerozoneice, Jun 11, 2019 at 12:40 PM
    Last edited: Jun 11, 2019 at 12:56 PM

    zerozoneice thread starter macrumors regular

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    #11
    that's something completely different, why am i reading all that?
    i am on mojave from factory and want to install bootcamp
    i am on apfs and want to convert to hfs+
    i am NOT on SSD

    the paragon util did not convert the drive. it asks for a temporary volume, i created one on macintosh hd as hfs+ or exfat, but its created as apfs no matter what fs i tell it to do. then the paragon util simply says cannot convert.

    i wonder if i erase everything from recovery and format the macintosh hd as hfs+, will it stick? then reinstall macos...
    this is a mojave recovery so....

    anyway this is beyond my patience threshold, so i already kinda don't care anymore what games i can install in windows to test....this is a ******** experience.
    --- Post Merged, Jun 11, 2019 at 12:55 PM ---
    ok so i'm typing this from safari in recovery.
    there;s no way to convert or erase or format anything except in APFS.
    i suspect i need to break the fusion, containers and format them separately as HFS+ and then re-create the fusion.
    SERIOUSLY APPLE???????????????????????????????
     
  12. treekram macrumors 68000

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    #12
    The situation with the other post and yours is quite different, I would agree, but the bottom line is that Mojave HFS+ Fusion was unusable for that OP. The differences between the two situations may mean that it would work on your configuration.

    If you can live without Windows, my advice - you can certainly take it or leave it - is to just use the iMac as it came configured - APFS Fusion, no Boot Camp and try Boot Camp later when (if) Apple comes up with a solution. Even if you succeed in getting HFS+ Fusion with Boot Camp working, you'll have a system configured in a way that Apple doesn't like and when that happens, it will take ongoing work to maintain unless you plan to stay on the current version of Mojave going forward.
     
  13. zerozoneice thread starter macrumors regular

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    Jun 26, 2013
    #13
    i need windows for gaming obviously.
    what are the alternatives? install windows on external T5 SSD and boot into it via option key on imac restart?

    or make a bootable stick with an older high sierra installer and try to install that with hfs+ as default?
     
  14. treekram macrumors 68000

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    #14
    I misunderstood your previous post - I thought you were about ready to throw in the towel with Windows on the Mac.

    Boot Camp on Fusion computers (when it was working) would put the Boot Camp partition on the HDD - I would doubt that it would be any different once Apple gets this working on Mojave APFS. I don't know if this presents a problem in what you want to do.

    The standard Boot Camp install will not put Windows on an external disk. There are ways around this but it takes some work. The following link is just one guide available on what needs to be done:
    https://www.imore.com/how-install-windows-10-your-mac-mini-external-drive

    You can also install Windows without Boot Camp although I don't know that it's any easier. This is one set of instructions:
    https://www.intowindows.com/how-to-install-windows-8-1-on-mac-without-boot-camp/
    (I don't know about this guide - it's showing the older version of Disk Utility even though the article was supposedly updated in April 2019).

    You cannot install High Sierra on your iMac if it's a 2019 model (vs. a 2017 model sold in 2019).

    If the instructions for doing Windows on an external disk or without Boot Camp is something you don't want to do, the alternative if your iMac is in within the return period is to return it and get a SSD-only configuration.

    If this is frustrating, vent on Apple. We're just the messengers here.
     
  15. zerozoneice thread starter macrumors regular

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    Jun 26, 2013
    #15
    thanks, yea i know, i vented enough with their chat support :) now i have to call applecare apparently to get in touch with some escalation engineer on my case.

    windows is a must, so yeah, i'll keep trying. I'm still in the return period if nothing works.
    windows in bootcamp on fusiondrives runs only from the HDD, it doesn't touch the SSD at all...known issue
     
  16. zerozoneice, Jun 12, 2019 at 12:42 PM
    Last edited: Jun 12, 2019 at 3:32 PM

    zerozoneice thread starter macrumors regular

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    #16
    ok so I got a 1TB Samsung T5 drive
    I tried to follow the guide here https://9to5mac.com/2017/08/31/how-windows-10-mac-boot-camp-external-drive-video/ but it's useless. It tells you to format the SSD to MacOS Extended Journaled, then as next step connect it to the Windows VM and expect to see an EFI and a large partition which you should format in NTFS???!!!!! WTF

    I'm now trying this one using Rufus, except I don't have a separate windows machine but will use it as VM.
    By the way, VMWare Fusion does not recognise the HFS+ T5 once you replug....another minus for the 9to5mac tutorial...

    And of course Parallels forces you to register before giving access to the freshly installed VM. So I scrapped this crap as well, now trying with VirtualBox....

    ================
    I made it!
    A combination of both tutorials above. Rufus gave me issues even on an windows machine to format the T5. Ended up with WintoUSB which worked perfect. Selected my bootdrive as Windows in MacOS "Startup Disk / Settings". Now i'm configuring Windows and preparing for some gaming tests tomorrow. Speeds are great on the T5, can't really tell it's external :) 540MB/s read, 480MB/s write.
    ================
    Ontopic: the AppleCare engineer sent me some articles to erase the drive in internet recovery and make the windows partition smaller ?!? Duhh, I tried them for the sake of trying, but BC still hang at partitioning disk. That's when I decided to go external T5 way
     
  17. zerozoneice thread starter macrumors regular

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    Jun 26, 2013
    #17
    I partied too soon.....there is no sound in bootcamp....
    Anyway i ran some Battlefield 5 and even in the intro "level", the fan speed picked up considerably to the level that i was like "wow, never heard an iMac that loud before".

    I noticed the same thing in MacOS benchmarks such as Cinebench 20 or Heaven (GPU temp up to 86C).

    So i guess all in all, this machine does not justify the price, nerves and failed configs and wasted time.....at least for my use case scenario. It will be returned.
     
  18. ThunderSkunk macrumors 68030

    ThunderSkunk

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    #18
    Having made this mistake myself, and waited til beyond the return period to realize the full extent of the pita of this, & by then having it cost me a thousand extra dollars to sell the system and replace it with an SSD model, I’d 100% recommend the return. If you need to run Windows on a Mac, go SSD only. Fusion drives don’t cut it, for a number of reasons.
     
  19. zerozoneice thread starter macrumors regular

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    Jun 26, 2013
    #19
    it's not just that. it's the whole experience. wasted 3 whole days on this.

    judging from how loud the fans get and what temperatures it reaches, it's pretty clear this design is nearing EOL. I mean it's a i5 and 580X, not i7 and Vega48.. my last iMac was a late 2015 with M395 and it never ever got so loud as this one. So i'm comparing apples to apples (pun intended), not just some other PC or Mac with this 2019 iMac model.

    and it kinda hit me now just how expensive this thing was compared to a similar powered PC (even as hackintosh) :)
    i already filed for return.

    I'm seriously wondering if anyone at Apple actually opened up a brand new '19 model with fusion and tried to repro the issues we all have....you bundle Bootcamp with the OS, well, we expect it to work in any configuration.
     
  20. zerozoneice thread starter macrumors regular

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    #20

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19 June 10, 2019