Quoting Robert Lewis (bob.l...@gmail.com
With rare exceptions, multibooting has _always_ been a bad idea, and ever
since virtual machine technology became routine more than 20 years ago,
it's been much smarter to move your legacy proprietary OS into a VM,
running underneath native Linux. (There were alternative ways, before
Doing that requires a bit of planning and understanding of one's system,
which is one reason why dumber and less satisfactory solutions predominate.