“Boot Camp is the macOS solution for installing an alternative operating system on your Mac, letting the new OS run natively on your Mac rather than in a virtual machine. However, many macOS High Sierra users have reported trouble creating new Boot Camp partitions on the latest version of Apple’s operating system,” Joseph Keller writes for iMore. “For instance, perhaps you get an error telling you that your disk doesn’t have enough space, even though macOS has shown you that, indeed, there is enough.”
“There are a couple of reasons that this could be happening,” Keller writes. “First, you’ve got local snapshots, backups of your Mac stored locally, rather than on your Time Machine disk. These backups are created quickly once every hour, and while activities like downloading files or installing apps shouldn’t be affected by their presence, for some reason, Boot Camp is.”
“The other problem that you might run into is some kind of file system corruption,” Keller writes. “Here’s what you can do to try to fix your problems with getting Boot Camp to work on macOS High Sierra.”
Read more in the full article here.
MacDailyNews Take: Good luck, Boot Campers!
SEE ALSO:
How to perform a clean install of macOS High Sierra – March 6, 2018
One other potential hitch: for some bizarre reason, you can only install Boot Camp volumes on a drive in the FIRST BAY (ie, bay 0) in a multi-bay system (like an older Mac Pro). So if your boot volume is in bay 0, and you want to install Windows on a second drive, you need to swap them so your boot drive is in bay 1.
I do not know personally if this also holds true for external volumes.
Quite honestly, this is bollocks. 2 solutions – either delete Timemachine backup or reformat drive. Suicide which ever way you look.