Solved: VBoxGuestAdditions.iso (VERR_PDM_MEDIA_LOCKED)Solved:

Situation: 

   When inserting Guest Additions CD Image in a Debian VM you are getting VERR_PDM_MEDIA_LOCKED 

Solution: 

   There are many solutions, like: 

1) Executing 

  sudo apt-get upgrade 

  sudo apt-get install virtualbox-guest-additions-iso

2) Removing and inserting the cd from the VM configuration

and a third one which is the one that worked with me:

a) Start the VM

b) Open a terminal

c) Execute this:

  sudo su

  cd /media

  mkdir cdrom

  mount /dev/cdrom /media/cdrom

  cd cdrom

  sh VBoxLinuxAdditions.run

Hope this helps.

Alejandro,

Installing Linux in a Sun Fire Server

Introduction:
The following describes the procedure for installing the operating system Debian GNU / Linux on a Sun Fire V210 Hardware. 


First:
* As we know, this has not Hardware Out Video Card VGA or PS2 port for Keyboard. What if it has a serial port for Management.  
* This server is  64-bit SPARC architecture.

Procedure:
1. - Download Image.
You can download the distro from http://cdimage.debian.org/debian-cd/6.0.3/sparc/iso-cd/
You will need least CD number 1
Then downloaded ISO: http://cdimage.debian.org/debian-cd/6.0.3/sparc/iso-cd/debian-6.0.3-sparc-CD-1.iso

Please remember to burn the image a low speed, it's good to avoid some drawbacks.



2.- Place the Debian CD image to the CD / DVD ROM Server.
3. - Now, we must establish a connection via Serial COM with the Sun Fire V210 server.
We can use Hyperterminal, Minicom or even PuTTYtel.
To create the serial connection you will need the following parameters:
 9600,8, n, 1 (Default). 

The cable is a cable type used Rollover (NOT crossover). Typically console cables Cisco equipment will work.

3. - Start the server. The challenge is to make Boot from CDROM drive.
To do this, do the following: When the server is starting, we pressed Sequence 'STOP + A'.
In a conventional keyboard, this sequence is the same as 'CTRL + SHIFT + BREAK' or 'CTRL + BREAK'.
In doing so, you will get PROMPT {} Ok, when that happens we do the following:
{} Ok printenv auto-boot (To see the State Flag of the auto-boot)
{} Ok setenv auto-boot false (for setting the auto-boot Flag False)
{} Ok reset-all (Reboot the System)
4. - When the computer restarts, return to Press 'STOP + A', and at the prompt {} Ok we do isinstructed to do Boot from CDROM, so:{} Ok boot cdrom 
4.- From that moment, the server should begin to start from the CDROM drive. I recommend to use the terminal in Full Screen mode to see the installation as if it were a monitor connected to the server.

5.- From this point, it follows exactly the Debian installation procedure (Users, Partitions, Repositories, etc..)
Key Points:- Download the ISO image for SPARC 64.- The sequence 'STOP + A', which can be also 'CTRL + BRAK' or 'CTRL + SHIFT + BREAK'.- Place the screen in full screen.- If at any time the connection is lost Serial (usual with PuTTYtel), simply close and reopen theSerial Connection and type any key to recover the installation.- The system boots from the CDROM cuandl being the PROMPT {} Ok you type 'boot cdrom (Very Important ...!)
- To start the server automatically is necessary in ok prompt type the following:

auto-boot? = trueboot-device = disk


 I hope it is useful.





Manual based on documentation of Professor Jose Gregorio Cotua