This morning upon rebooting my VM, it made my Mac unresponsive for about 5 minutes while it took forever to boot up. This feels like a beta product and I am tempted to go back to VMware or just use Boot Camp. As I type this my Mac is super slow to respond. I have a late 2011 MacBook Pro model with 16GB of RAM. I am running the latest version of OS X Yosemite (I would tell you the exact version number if About This Mac wasn't taking forever to load because of Parallels) and the latest update for Parallels Desktop 10.
It looks like the root cause may be that the Windows VM is always at 100% disk usage.
Update... Good news. After waiting about 10 minutes I have finally made it slightly past the Windows login screen to the blue Welcome screen. In about 3-4 hours from now I'll be actually able to use the VM.
Last edited: Nov 19, 2014