No Boot Camp on Mojave??? ***?

I suggested starting a new discussion to avoid confusion with OP. If you have a 3TB Fusion drive with Windows installed, your Mojave upgrade should have failed.

I'm having the same issue on a late 2014 model with the 3TB drive

Can you look at the second post on this page? Also, a 2014 model can support EFI Boot, so you do not need to use the default MBR method that BCA uses.

Hi there,

I can state that this is not working on the IMac Late 2012 with Fusion Drive 3TB!

I've tried the above mentioned but it all comes up to some error :/ ...

I even have reseted the Fusion Drive itself and tried the above booting from legacy and EFI but I'll always get an error or because the MBR or about the windows EFI.

There could be some work around but it should be simpler...

Cheers,

endesse

tineketover wrote:

Is there a chance that Apple will fix this issue eventually as it did when the 3 TB drive was first introduced on the late 2012 iMac, or are there incompatibilities that cannot be fixed?

The 2012 Macs are preUEFI. The first UEFI Macs are late 2013. preUEFI Macs use a Hybrid MBR to mimic a BIOS disk layout, which has two limitations

• 32-bit numbers for partition sizes, which limits the size to 2TB
• Four (4) entries in an MBR

On a 3TB disk, you can have two layouts

• Sandwich - macOS(Part1)+Windows(<1TB)+macOS(Part2) - This uses CoreStorage. Not supported on APFS, because there is no equivalent partitioning methodology. APFS does not support more than 2 disk partitions.
• Non-Sandwich - macOS (<2TB)+Windows>1TB+). This can be supported on APFS and is used on non-3TB disks and 3TB Fusion disks. Apple chose not to pursue this path, but a user is free to choose this method, but BC Assistant is not designed to support this, which implies manual partitioning.

tineketover wrote:

It is certainly bad, as I thought I had a future proof system, especially with the 3 TB replacement drive a few years ago.

See dialabrain's 'Future-Proof' comment. Apple would be out of business if they did not sell new 'features' to you.

tineketover wrote:

It would be good to explain what APFS conversion entails (what does it mean) as this apparently interferes with bootcamp and time machine.

It depends on what you call 'interfers'. 😉

Prepare for APFS in macOS High Sierra - Apple Support

See if your Mac shares space across APFS volumes in System Information - Apple Support

About Time Machine local snapshots - Apple Support

About Apple File System | Apple Developer Documentation

https://developer.apple.com/support/apple-file-system/Apple-File-System-Referenc e.pdf

If you need more reading material, please ask.

What if you already have Windows10 Installed on your Mac already? I have been using boot camp and then Parallels to use Windows to run my business software and now am unable to get to it because of the update! Its year end and need to finalize my books! I keep getting an error message from windows went I open boot camp and it will not repair its self. (if it were a PC I could fix it) I was thinking maybe I need to download windows. I already updated Parallels to make sure that wasn't the problem.

Any help would be appreciated.

Thank you

You can always go to a website that has modded versions of the Parallels application so you don’t have to pay for the software that website is nmac.to

However it looks like you will need to reinstall macOS/OS X on you’re Macintosh. You’re best bet is to have another Macintosh computer or borrow a friends and download the InstallESD.dmg file for macOS Mojave.

However, in the event that you have a Windows PC, google hackintosh.downloads macOS InstallESD and click the hackintosh.downloads one. After choosing you’re version of macOS Or Mac OS X, download TransMac for Windows. Now you will need at least a 8-16GB usb flash drive, MAKE SURE THERE IS NOTHING ON IT BECAUSE EVERYTHING WILL BE ERASED. When the macOS or OS X InstallESD.dmg is done downloading as is TransMac, open TransMac and then plug in you’re USB Flash drive to you’re Windows PC. Right click on the tab with the flash drive and click format disk for Mac. Then select the InstallESD.dmg file from wherever you downloaded it and saved it to. After that, wait until the process is done (side note: it takes a while) after everything is done, just pull out the USB Flash drive from the Windows PC don’t worry about ejecting it. Now while you’re Mac is off, plug in the USB Flash Drive. Now as soon as you turn the Macintosh on, hold the option key on the keyboard until you see a grey screen with 2 little logos on it. Click the flash drive.

NOW PROCEEDING TO THE FINAL STEPS WILL ERASE ALL YOUR DATA ON YOUR HARD DRIVE.

Now, remember how I said you should download macOS Mojave because it’s the latest version, will that’ll help you in the long run because if you didn’t, then when trying to install anything below Mojave, you will get an error but there is a work around that. But now what you will do is click utilities, then click disk utility, click the hard drive at the top and click erase BUT WAIT before you do that, make sure before you click the final erase button, you named your Hard disk something like Macintosh HD or anything and make sure it is set to Mac OS Extended Journaled or else it will not work at all. Then click erase. Now close disk utility by pressing command and then Q on you’re keyboard. After that, click install macOS and click whatever you named your hard drive and you’ll be on your way. Just remember whenever your Mac starts up in that install process, anything after that click Macintosh HD NOT YOUR FLASH DRIVE BECAUSE THAT WILL RUN THROUGH THE ERASE PART OVER AND OVER AND OVER AGAIN. Hope that helps!

Cheers,

Nicholas 

I have a Mac Pro mid 2012 and Boot Camp was working fine on High Sierra, I use Window 7 ultimate on a separate disk for gaming.

I have now installed Mojave v 10.14 and the Boot Camp assistant doesn't work any more.

I have this message.

My Window drive doesn't show on reboot with Alt key pressed, neither it appear's on system pref > Choose startup disk.

The only thing that hase changed is Mac OS: (High Sierra -> Mojave), so I think Mojave is the only culprit !

cd

As I have already say on this forum, I don't think the problem is the drive. I have installed Windows 7 on a separate disk and Boot Camp was ok under High Sierra, I use TUXERA to gain access to the Windows drive from Mac OS.

Still waiting for a fix to Mojave from Apple ...

cd

You're missing the point - I can't install Mojave without erasing my BootCamp partition. Period. And even if I back it up, I can't use BootCamp with Mohave on my mac. At all. Period.

From Apple/s Support Docs:

BootCamp Installer will not run on my particular mac under Mojave. So it's literally BoorCamp or Mojave, either/or.

I'm having the same issue on a late 2014 model with the 3TB drive

There could be some work around but it should be simpler...

Please start a new discussion and we can try to install Windows.

Sorry you're ticked off. My guess is the drive in a 2012 iMac and the one in a 2018 iMac aren't the same. It's no doubt a hardware issue and I can't see Apple retrofitting 6 year old iMac's drives so a few people can run Boot Camp. I could be wrong. In the meantime you could run Windows as a virtual machine.