Virtual box is open source – full virtualization of x86 hardware. Unlike Microsoft Virual PC (A free version of virtualization software for x86 architecture) which had some issue to bring up the 
display setting properly for fedora Linux or open Solaris OS. I have a Dell Inspiron 1520/1521 who's WXGA+ diplay uses inbuilt display from intel chipset which shares 512 MB or RAM (max) when the installed RAM is 4GB. On parallel installation of Fedora Linux or Open Solaris OS, they fail to detect my WXGA+ display, or comply with it for even a lower resolution. It appeared the same when i tried to install these Operating Systems as Virtual instances on Microsoft Virtual PC. Microsoft Virtual PC, is expected to generate a virtualized display card with generic drivers, but what i expected was not a true possibility as it was built for what it 
was. Other hardware virtualization options of Xen HyperV (Open Source) was ruled out, because the issue was not just installing Virtual OS over my laptop but, was to bypass the video card compatibility issue with Open Solaris OS or Fedora Linux. Surprisingly i came across the Virtual Box from Sun Microsystems. Open Solaris requires only 512 MB , but if you allocate 512 MB to install the OS then it might take few hours to complete the installation. It is better allocate 1GB+. After it installs Open Solaris runs without any issues on the machine. Network connection gets shared automatically with the underlying Network 
connection. On the whole I appreciate this flaw less open source Virtual Box.
display setting properly for fedora Linux or open Solaris OS. I have a Dell Inspiron 1520/1521 who's WXGA+ diplay uses inbuilt display from intel chipset which shares 512 MB or RAM (max) when the installed RAM is 4GB. On parallel installation of Fedora Linux or Open Solaris OS, they fail to detect my WXGA+ display, or comply with it for even a lower resolution. It appeared the same when i tried to install these Operating Systems as Virtual instances on Microsoft Virtual PC. Microsoft Virtual PC, is expected to generate a virtualized display card with generic drivers, but what i expected was not a true possibility as it was built for what it 
was. Other hardware virtualization options of Xen HyperV (Open Source) was ruled out, because the issue was not just installing Virtual OS over my laptop but, was to bypass the video card compatibility issue with Open Solaris OS or Fedora Linux. Surprisingly i came across the Virtual Box from Sun Microsystems. Open Solaris requires only 512 MB , but if you allocate 512 MB to install the OS then it might take few hours to complete the installation. It is better allocate 1GB+. After it installs Open Solaris runs without any issues on the machine. Network connection gets shared automatically with the underlying Network 
connection. On the whole I appreciate this flaw less open source Virtual Box.
