The Guest Additions for Oracle Solaris are provided on the same ISO CD-ROM as the Additions for Windows and Linux. They come with an installation program that guides you through the setup process.

Installation involves the following steps:

1. Mount the VBoxGuestAdditions.iso file as your Oracle Solaris guest's virtual CD-ROM drive, exactly the same way as described for a Windows guest in .

   If the CD-ROM drive on the guest does not get mounted, as seen with some versions of Oracle Solaris 10, run the following command as root:

   svcadm restart volfs

2. Change to the directory where your CD-ROM drive is mounted and run the following command as root:

   pkgadd -G -d ./VBoxSolarisAdditions.pkg

3. Choose 1 and confirm installation of the Guest Additions package. After the installation is complete, log out and log in to X server on your guest, to activate the X11 Guest Additions.