ReFS isn't meant as a mainstream FS. It's a pure storage FS that is meant to specifically work with backup applications for space saving purposes and with Hyper

ReFS isn't meant as a mainstream FS. It's a pure storage FS that is meant to specifically work with backup applications for space saving purposes and with Hyper V. You can't even boot an OS off it, and the overhead from the block cloning technology simply cannot be compatible with normal OS usage.