Virtualbox on OS6 NAS

    ###########################
    ###                                         ###
    ###  Upgrading NAS to 6.4.2  ###
    ###   Upgrading VirtualBox     ###
    ###              to 5.0.16             ###
    ###                                         ###
    ###########################

Download to NAS /data/VirtualBox:
http://download.virtualbox.org/virtualbox/5.0.16/
*Oracle_VM_VirtualBox_Extension_Pack-5.0.16.vbox-extpack
*VBoxGuestAdditions_5.0.16.iso
*virtualbox-5.0_5.0.16-105871-Debian-wheezy_amd64.deb

http://kb.netgear.com/app/answers/detail/a_id/2649/~/gpl-open-source-code-for-programmers
*ReadyNASOS_V6.4.2_WW_src.zip


    ## Installation of NAS update
    Either manual or auto install ReadyNAS Update 6.4.2

    ## Cleanup
    SSH to NAS
    # ** Removing the symbolic link to the old kernel files for OS 6.2.4 (or 6.2.3)
    cd /usr/src
    rm linux-3.0.101-0.46
    
    # ** Removing the linux-3.0.101-0.46 directory for OS 6.2.4
    rm -rf /data/.apps/linux-3.0.101-0.46

    # Cleanup VirtualBox directory
    cd /data/VirtualBox
    rm ReadyNASOS_V6.2.3_WW_src.zip
    rm Oracle_VM_VirtualBox_Extension_Pack-4.3.26-98988.vbox-extpack
    rm VBoxGuestAdditions_4.3.26.iso
    rm virtualbox-4.3_4.3.26-98988~Debian~wheezy_amd64.deb
    rm -rf tmp ## This should only be the extracted version of ReadyNASOS_V6.2.3_WW_src.zip

    ## Extract and copy kernel files
    mkdir tmp
    mv ReadyNASOS_V6.4.2_WW_src.zip tmp
    cd tmp
    unzip ReadyNASOS_V6.4.2_WW_src.zip
    cp -rp linux-4.1.16-x86_64/ /data/.apps
    ln -s /data/.apps/linux-4.1.16-x86_64 /usr/src/linux-4.1.16-x86_64

    ## Installation kernel files
    apt-get update
** apt-get install build-essential ** You should be able to skip this step but I did it out of habit
    export KERN_DIR=/usr/src/linux-4.1.16-x86_64
    cd /usr/src/linux-4.1.16-x86_64
    cp /data/VirtualBox/tmp/linux-4.1.16-x86_64/arch/x86/configs/defconfig.x86 /usr/src/linux-4.1.16-x86_64/.config

    ## ** Check kernel install options and modules
    apt-get install bc
    make menuconfig
    make ARCH=x86_64
    make modules_install ARCH=x86_64
    

    ## Uninstall VirtualBox 4.3
    dpkg -r virtualbox-4.3

    ## Install VirtualBox 5.0.16
    dpkg -i virtualbox-5.0_5.0.16-105871-Debian-wheezy_amd64.deb
    sudo /sbin/rcvboxdrv setup

    VBoxManage extpack uninstall "Oracle VM VirtualBox Extension Pack"
    VBoxManage extpack install Oracle_VM_VirtualBox_Extension_Pack-5.0.16.vbox-extpack