HT205016: Install Windows 7 and earlier on your Mac using Boot Camp
Learn about Install Windows 7 and earlier on your Mac using Boot Camp
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Q: How to upgrade to win 7 64 bit
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Dec 18, 2015 4:04 AMby Loner T,HelpfulI suggest removing 32-bit and installing 64-bit. There is no supported upgrade path on a Mac.
From Use Windows 10 on your Mac with Boot Camp - Apple Support (and this is valid for all Windows versions on Macs),
Upgrading from 32-bit versions of Windows
If you have an existing 32-bit installation of Windows on your Mac, you'll need to back up your important files so that you can remove the existing Windows partition and install a 64 bit version of Windows.
- Back up any important files from your Windows partition.
- Use Boot Camp Assistant to remove the existing Windows partition.
- Then, use Boot Camp Assistant to install a 64-bit version of Windows 10 on your Mac.
- After you're finished installing Windows, copy your important files back to your Windows drive.
