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I have around 16GB of RAM on my Mac, and I'm running VirtualBox. I'd like to give the VM more than the 4GB of RAM it's limited to – say, I want to give it 8 GB or more of my available RAM.

Is it possible to do so?

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up vote 6 down vote accepted

Yes, you can change the amount of assigned memory in the VM's settings under System » Motherboard.

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The weird thing is that it only allows me to have a maximum of 4GB while I have like 16GB of ram in my Mac. :( – Ali Mar 18 '12 at 18:34
What operating system is your VM running @Ali? – slhck Mar 18 '12 at 18:37
@slhck the Virtualbox running on Mac OS X 10.6.8 I've tried with all the OS and the only max ram I get it is 4GB :( – Ali Mar 18 '12 at 18:40
No, I mean the virtual machine (i.e. the guest system), not your host. @Ali – slhck Mar 18 '12 at 18:46
@Ali: You need to be as exact as possible. For example, "CentOS 5.8 i386" or "CentOS 4.9 x86_64". – David Schwartz Mar 18 '12 at 19:23

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