If you can't run High Sierra because of hardware, you might run into the same issue with Win 10.
Regardless, what you could do is forget traditional Boot Camp methods. Burn the Win 10 iso to DVD. Extract the Boot Camp files and either put them on a flash drive or another optical disc. Re-partition the disk. Alt Boot and choose the Win 10 disc, install. Look in Device Manager and use the extracted Boot Camp drivers to complete the hardware setup. You might find that you need a different version of Boot Camp for the correct drivers.
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That means that you will need to Alt Boot to switch between OSs, but that's what I always did with official Boot Camp setups anyway.
Nov 01, 2019 How to Install / Bootcamp Windows 10 on a mid-2011 iMac using USB. Apple has released support for bootcamping Windows 10, but only on 2012 Macs and later. Despite not being supported. It is possible to install Windows 10. On my previous Mac, I was able to partition my harddrive and run Windows, including games and programs based exclusively for Windows. I attempted to do that with my newer Mac (Late 2011 model), with OS X Lion installed (Windows XP), and I seem to have lost my disc to install the lion drivers on the Windows partition, meaning I can't get internet or use any programs.
If that doesn't work, a third party boot loader like rEFInd might help. http://www.rodsbooks.com/refind/
Boot Camp is Mountain Lion’s built-in technology that allows you to run Microsoft Windows Vista, or Windows 7 on any Intel-based Mac. If your Mac meets the following requirements, you can run Windows on your Mac (if you so desire):
- An Intel-based Mac (of course)
- At least 10GB of free hard drive space (though you’ll almost certainly need more)
- A hard drive that isn’t partitioned
- A blank recordable CD
- A printer (for printing the instructions)
- A full install copy of Microsoft Windows Vista, or Windows 7 Home Premium, Professional, or Ultimate
You really do need a full retail copy of Windows, one that was purchased in a retail box. If your copy of Windows came with your Dell or HP, you probably can’t install it under Boot Camp.
To install Windows on your Mac, here are the basic steps:
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- Launch the Boot Camp Assistant application, which is in your Applications/Utilities folder.This step creates a partition on your hard drive for Windows and then burns a special CD with all the drivers you’ll need to use Windows on your Mac.
- Install Windows on the new partition.
- Install the drivers from the CD you just burned.From now on, you can hold down Option during startup and choose to start up from either the OS X Mountain Lion disk partition or the Windows partition.
If running Windows on your Mac appeals to you, you might want to check out Parallels Desktop or VMWare Fusion (around $80 each) or VirtualBox (free). All three programs not only allow you to run Windows on your Mac, but also let you do so without partitioning your hard drive or restarting every time you want to use Windows.
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In fact, you can run Mac and Windows programs simultaneously with all three of these products.