Virtual Box

Discussion in 'macOS' started by Jacob Allen, Sep 21, 2011.

  1. Jacob Allen macrumors newbie

    Joined:
    Jul 29, 2011
    #1
    When I set up virtual box, it asks how much ram I want to give to the new OS. I know when I'm running the VM, that ram will be unavailable, but does it take up the ram forever, so if I have 4GB of ram, and I give 1GB of ram to the new OS, will OS X only have 3GB left even when the VM is not running?
     

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  2. ScoobyMcDoo macrumors 65816

    Joined:
    Nov 26, 2007
    Location:
    Austin, TX
  3. Jacob Allen thread starter macrumors newbie

    Joined:
    Jul 29, 2011
    #3
    Thanks

    Thanks, just making sure I would lose anything.
     
  4. r0k macrumors 68040

    r0k

    Joined:
    Mar 3, 2008
    Location:
    Detroit
    #4
    If you try to give more than half your RAM to the guest OS, it warns you that your host OS may become unstable. I had to do this to run win 8 64 bit inside win 7 32 bit. I had 4 gig of RAM but virtualbox seemed to think I could only give the guest OS 1.5 Gig. I couldn't get through the Win 8 install with less than 2 gig (on windows) so I increased it. I shut down everything but the VM while I was doing the install. After the install I was able to go back and reduce it.

    I had a similar situation with win 8 on my Mac. I increased the RAM for the VM to 1.5 Gig to get it to install but I was able to reduce it to only 512MB afterwards. Note that any snapshots I made with the larger RAM were no good anymore.
     

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