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Showing posts from January, 2013

Enabling multiple cores in VirtualBox

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This post is a follow up to my earlier post Moving from VMWare Player to VirtualBox.

Once you have set up your VirtualBox instance, the first challenge you will face is that the guest OS may possibly be very slow due to the fact that the number of cores allowed is only one. Hence you will have to increase the number of cores that your guest OS can make use of. Open the VirtualBox manager, click on your VM, then click on the Settings button. In the Settings window, click on the System on the left pane and select the Processor tab on the right.
In this page, you can increase the number of processors. If you haven't already enabled the virtualization in your processor, you are likely to get an error when you click on OK. The error message will look like this:


Failed to open a session for the virtual machine Lubuntu.
VD: error VERR_NOT_SUPPORTED opening image file 'C:\VMs\Lubuntu.vmdk' (VERR_NOT_SUPPORTED).
Result Code: E_FAIL (0x80004005)Component: ConsoleInterface: IConsole {d…

Moving from VMWare Player to VirtualBox

This is my first post this year. Wishing you a happy New Year.

Until a week back, I was using VMWare Player for my personal use to learn different OSes. Using VMWare Player, I was trying out various Linux distros. I have been a fan of VMWare Player for six years now. Offlate I started seeing theese limitations:

I bought a new i7 quad core laptop. Even though I have 8 cores, my VMWare Player will not allow me to create a VM with more than 2 cores.I used to enjoy the vmnetcfg command line tool which used to come with VMWare Player. But it has been removed from recent installations. Due to this, I was unable to configure NAT port-forwarding.I used to be able perform packet sniffing using vnetsniffer command line tool. That also has been removed in the recent distributions.You cannot run a 64bit guest OS in VMWare Player. Hence I could not run my guest Linux OS distros with more than 3 GB of RAM. Before I started using VMWare Player primarily, I was evaluating VirtualBox. At that time, it…