Archive for category VMware / Virtual Box / HyperV

VMware Workstation 8 – WAN simulation (Awesome feature alert)

Just found an awsome feature…… a bandwidth and interface error generator for each virtual NIC.  Great if you are doing Proof of Concept testing for high latency or even 3G simulated links.

To configure, locate the virtual NIC properties and press ‘Advanced’

Then you will be shown this screen.  You can select preset bandwidth in both directions and packet loss


Its truly an awsome product that amazes me each time I try to do somthing

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Cisco CUCM/Call Manager – Running on Sun’s Virtual Box

Well it is possible :) with a bit of hacking – but thats what its all about, isn’t it !

I actually used an existing working VM that had been built on VMware.  I will test building one from scratch on VirtualBox but not 100% sure it will work….


1) Get the existing VMDK and copy it to your Virtual Box machine repository
2) Create a new VM using a Linux, Redhat, 1024MB RAM etc machine and set the disk as the VMDK
3) Modify the machine – I removed the sound card
4) Locate the machines XML config file.   The directory is set in VirtualBox’es config.  Edit it and add the following:

Add the following lines to it in the "<ExtraData> </ExtraData>" section:

<ExtraDataItem name="VBoxInternal/Devices/pcbios/0/Config/DmiBIOSVersion" value="6 "/>
<ExtraDataItem name="VBoxInternal/Devices/pcbios/0/Config/DmiSystemVendor" value="VMware"/>
<ExtraDataItem name="VBoxInternal/Devices/pcbios/0/Config/DmiBIOSVendor" value="Phoenix Technologies LTD"/>
<ExtraDataItem name="VBoxInternal/Devices/pcbios/0/Config/DmiSystemProduct" value="VMware Virtual Platform"/> 

(That bits from

5) Next follow the guide here to get root access.  Make sure you use the CentOS Disk 1 rather than the Live Disk…….grrrrr

6) Edit the /usr/local/bin/base_scripts/ script to look like this:

We essentially comment out the hardware check and validation :)

function check_deployment()
    local tmp_deployment
    # Check the deployment
#    isHardwareValidForDeployment $tmp_deployment
#    rc=$?
#   if [ $rc -ne 0 ]; then
#         log info "$tmp_deployment deployment Not Supported"
#         return 1
#    fi
    # Deployment is supported by this hardware
    log info "$tmp_deployment deployment Is Supported"
    return 0

 7) Save it and reboot

8) The VM should come up and work !

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Sun Virtual Box – Cloning machines

I’m a big fan of Sun’s Virtual Box – its cross platform (I run it on Windows 7 X64,OS X and Ubuntu), FREE and works :)

Cloning machines is pretty the same as all OS’s, with one slight twist…..

1) Copy the VDI file you want to clone/backup.

2) This file won’t boot because it has the same UUID as the first file you copied, so need to use VBoxManage utility to give it a new random UUID.

3) Open command prompt, and change to your Vbox directory with VBoxMange.exe in it. Probably located at C:\Program Files\Sun\xVM VirtualBox\

4) Run this command in command prompt
VBoxManage internalcommands setvdiuuid “D:\My Virtual Machines\VDI\HardDiskName.vdi”

Obviously you would change the above path to point to your NEW VDI file that you created (not the original).


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Quick and dirty Virtual Machine re-sid’ing

For a test environment its handy to have pre-build OS’s (especially on Windows) to run a new one up quickly.  For those who dont need support or havnt got the time to spend getting Sysprep to work properly try this script below in conjuction with the SysInternals NEWSID application.

  1. Copy NewSID.exe to c:\
  2. Copy the script source below to c:\NewSid.cmdstart /wait c:\newsid.exe
    del “c:\documents and settings\all users\start menu\programs\startup\newsid.lnk” /q
    del c:\newsid.exe /q
    shutdown /r /t 10 /f /c “SID Change” /d 2:4 /m \\HOSTSERVERNAME

    Note: Change the \\HOSTSERVERNAME to reflect the servers current hostname

  3. Add a shortcut to c:\documents and settings\all users\start menu\programs\startup called NewSID that links to c:\newsid.cmd
  4. Clear the eventlogs etc and shutdown
  5. Clone the disks

When the machine first boots and you logon, NewSID will run and ask you if you want a new machine name etc.  Dont reboot at the end otherwise the util will keep running

I know its nasty but its quick. dorty and works :)


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