Yosemite virutal machine runs very slow.

Discussion in 'Windows, Linux & Others on the Mac' started by mike mike, Sep 23, 2015.

  1. mike mike macrumors newbie

    Apr 16, 2015
    I prefer test certain things on a virtual machine before install them on the main computer, so I created a Fusion 8.0 virtual machine for Yosemite. Not only the Yosemite VM runs very slow, but also has a rather low resolution desktop. In the mean time, Windows 10 VM runs as great as that on the MacBook (13" Early 2015) and in high resolution.

    What did I do wrong? Does OSX virtual machine always run slow and in low resolution?
  2. allan.nyholm macrumors 6502a


    Nov 22, 2007
    Aalborg, Denmark
    You might have Console spitting out things in an endless stream about issues with graphics - that could bogging down Yosemite just like it does when I try Mavericks with VMWare Fusion 7 - I usually put and end to Console output with a Terminal command - that helps some. I also make sure to install the VMWare Drivers.
  3. chrfr macrumors 604

    Jul 11, 2009
    There are some issues with Yosemite in virtual machines. Follow the link here for information on what's behind it, and how to fix it: https://derflounder.wordpress.com/2014/12/13/improving-yosemite-vm-performance-in-vmware-fusion/
    That page has a link to an application called BeamOff which dramatically improves Yosemite's responsiveness when you run it inside the VM.
    Also, for more resolution in the VM, just drag the window bigger, and the virtual machine will automatically readjust to fit.
  4. mike mike thread starter macrumors newbie

    Apr 16, 2015
    Hi chrfr, this is extremely helpful. :) The BeamOff thing got the slowliness addressed!

    On the other hand, the resolution still appears an issue. I run OSX VM in full screen. The default res was 1024x768. Under the scale up option, only 1024x768 was listed. Can hi-res be used? It seems Win10 runs fine in high-res in VM. Does OSX only run in this res in VM?
  5. chrfr macrumors 604

    Jul 11, 2009
    You'll have to avoid using it in full screen, but if you drag the window in normal mode to take up your full display, the VM will adjust its resolution accordingly.

Share This Page