I find it bit difficult to work with VirtualBox guest operating systems without Guest Addons as my mouse gets stuck inside the guest OS otherwise.
Here is a quick how to for getting Guest Add-ons installed on your OpenSolaris.
1) Once you start the guest OpenSolaris, login and from the Devices menu of Virtualbox guest menu select “Install Guest Additions”. This mounts the VirtualBox Guest Add-ons iso into your Guest.
2) Now its time to add the OpenSolaris guest addon package from terminal, Open the terminal, traverse to cdrom mount point under /media.
3) Find VBoxSolarisAdditions.pkg.
4) To install VBoxSolarisAdditions.pkg, run the following command as root (su – can be used to login as root in console)
#pkgadd -d VBoxSolarisAdditions.pkg
When prompted, select all packages to be installed. Thats it.
Once the installation is over, just restart to see the difference.
