Installing VirtualBox Guest Additions For Linux

Installing Guest Additions For Ubuntu Guests in VirtualBox
http://ubuntu-tutorials.com/2007/10/13/installing-guest-additions-for-ubuntu-guests-in-virtualbox/

Install VirtualBox Additions for an Ubuntu 8.04 Guest
http://tombuntu.com/index.php/2008/05/23/install-virtualbox-additions-for-an-ubuntu-804-guest/
***Additional Steps required for Ubuntu 8.04 guests

My Linux Guest is Debian 4.0 r0 i3

1. Start up your Linux guest
2. [Devices] -> [Install Guest Additions]
   if the Guest Additions iso image is not available, VirtualBox may prompt you to download the image.
   
3. following steps is for Guest OS
   [Devices] -> [Mount CD/DVD-ROM] -> [CD/DVD-ROM image...] -> (Select VBoxGuestAdditions.iso)
   Your virtual Linux should recognize a new CD, mount the CD, for example:
   

   mount cdrom
   

4. some packages are required
   
   • kernel header, kbuild, make, gcc,..., for building modules. Or try:
     

     apt-get build-dep linux-headers-`uname -r`

   • x window: require X.org or XFree86 to be installed, or there would be error:
     

     Could not find X.org or XFree86 on the guest system. The X Window drivers will not be installed
     

     and the some related to X won't be installed. But, the VirtualBox Guest Additions module and share folder support kernel module will be installed anyway.
     
5. goto /media/cdrom(or wherever the CD is mounted) to install the Guest Additions,
   sudo sh /media/cdrom/VBoxLinuxAdditions.run
   sudo /media/cdrom/VBoxLinuxAdditions.run WON'T WORK in Debian with following error:
   

   # sudo /media/cdrom/VBoxLinuxAdditions.run
   bash: /media/cdrom/VBoxLinuxAdditions.run: /bin/sh: bad interpreter: Permission denied
   

6. The installer should prompt you that it’s time to restart the virtual machine once it’s done. Just logging out and back in should work.
7. Devices->Share Folders...->[add a new share name]
   
8. mount.vboxsf [share name] [mounted directory]
9. Add to Boot Process
   Due to the vboxvfs.ko is inserted AFTER /etc/fstab is mounted, adding to fstab WON'T WORK. It is suggested to add the mount script to /etc/init.d/vboxvfs, around:
   

   start() {
   (...........................)
   }
       ADD_SCRIPT_HERE
   mount -t vboxsf files /home/files
   succ_msg
   return 0
   }
   

10. 
    
11. 
    

on Windows Guest: \\vboxsrv\the_dir_name_you_set