Note that if you do this with 10.10, performance will be terrible because of graphics accelerations issues. From what I understand, 10.9 generally works fine i

Note that if you do this with 10.10, performance will be terrible because of graphics accelerations issues. From what I understand, 10.9 generally works fine in VMs, but there was a change in the underlying graphics engine in 10.10 that works fine on real hardware but plays merry havoc with VMs.