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

Thanks for that explanation. Primarily it is a fault of Microsoft's NTFS and Apple's task is to circumvent this. Hopefully they will do it again for Mojave's APFS. I'll wait until this is done because I intend to order some 4TB iMac Pros which will all become dual boot machines with Boot Camp.

Even better, my iPhone and iPad have been updated to iOS 12, and I can no longer connect them to iTunes on my High Sierra Mac. So to manage music or any other content, or access photos on my phone or iPad, I need Mojave, but I can't install Mojave without losing BootCamp.

That is beyond bogus.

(And BTW, I have a replacement drive, not the original, though it is a 4TB rather than a 3TB)

I think you mean anything OVER 3TB - mine is a 4TB replacement, and no love here, either. The real kicker is that with my iOS devices upgraded, I can no long manage or access content on them (iPhone & iPad) without upgrading to Mojave, but I can't upgrade to Mojave without losing BootCamp.

I have upgraded to iOS 12.1 on my iPhone 6 and my iPad and my Mac Pro Mid 2012 to Mojave v. 10.14.1.

Every thing is ok: backup with Photo and sync with iTune. In addition I use iMazing v 2.7.2, greate app.

cd

I confess I can't follow the technical discussion on getting access to Bootcamp from an external drive, and I wonder anyway if the drive would respond quickly enough to run programs but ...

Is it as simple as copying the existing Bootcamp (with its Windows programs) to an external drive and then installing Mojave? I rather suspect not and I'm very reluctant to delete my Bootcamp and the one Windows program I want to keep.

Hey dialabrain. I appreciate your high standard for Apple folk, but they are humans, if pretty well-trained. If you have any extensive experience with Apple Genius Bar, like most of us here, you probably have experienced that they opine often. I have not heard THIS statement, but I have heard other things very much like this that would certainly be considered 'off script' or ill-advised. So as to the comment from JamesfromWeybridge: I love Apple, but I believe that he heard something like this if he says so.

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?

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

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

tineketover

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?

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

1. Only Apple knows.

2. There's no such thing as "future proof".

Hey, sorry for a late response to you’re issue. It seems like macOS Mojave doesn’t support Boot Camp for you’re Late 2012 iMac. That sucks I know but, there is a way to install Microsoft Windows®️ on you’re Macintosh.

Step 1: Retrieve a disk Copy of Windows

Step 2: Open Disk Utility on Mojave

Step 3: Click Macintosh HD or whatever name you have for you’re Macintosh’s hard drive and click partition.

Step 4: Partition how much space you would want on the volume you are partitioning and when you’re done getting you’re space setup before clicking Apply, click name and name it Windows and then click format and format it as exFAT then click Apply.

Now insert you’re DVD copy of Windows ®️ And wait for you’re iMac to detect it. After that, click restart and as you’re iMac is restarting hold down the option key on the keyboard. When a boot menu of 3 comes up you may see EFI Boot, you’re Mac hard disk and The Windows DVD, click the DVD and when you’re going through the setup and get to the select disk section, click the disk that says Windows and click drive options then click Format. This will only format the Windows volume so it can be recognized so you can install Windows on it. Then proceed with the installation of you’re choosing of Windows ®️

Cheers,

Nicholas 

The following isn't regarding 2012 iMacs but after spending time trawling the internet looking for a solution and trying all kinds of things, I have posted this here in the hope it helps someone else.

I spent a long time trying to get Boot Camp to behave on my late 2015 i5 iMac running Mojave but it just wouldnt get past the partitioning of the disk phase in BCA. It would error within a minute or two.

I then tried the manual route, successfully created a partition, booted into Windows using a bootable USB but then Windows had issues in the 'Copying Files' phase of the install and would error there too!

I tinkered a while and eventually broke my OSX install completely by accidentally deleting a partition of the Fusion Drive. Great.

As always, I have a Time Machine external drive plugged in at all times and decided to start again from scratch restoring a backup from 2 days before.

After a few hours, restore completed and everything was back where it had originally been.

Tried the BCA again and shock of the century it worked first time so I now have Windows 10 Pro and OSX Mojave running together like old friends.

The cure? I couldnt tell you, if I'm honest but if it worked for me, it may work for you!

Time Machine + start from scratch = Happy New Year!

Because Mojave is fine on a Late 2012 iMac. I just installed it on mine. What isn't fine is one particular model of iMac and Boot Camp. I'm sure there is some technical reason.

Does your computer have a fusion drive?

Yep. 1TB.

You're welcome. I seriously doubt Apple purposely abandoned one specific iMac. I think there is some unexplained reason. Parallels and VMWare make very useful virtualization apps.