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1. Download and install Virtual Box (if you have it already, be sure to have the very latest version, 4.3.6) for your system from https://www.virtualbox.org/wiki/Downloads
2. Download the .ova file from http://www.hawc-observatory.org/Fermi-VERITAS-HAWC/ (it's about 7.4GB in size)

Install the virtual machine

See the following video (watch it on YouTUBE if it does not work for you on confluence) and the instructions below (NOTE: even if in the video below the file is called GRB_VM.ova, you will of course use GBM_VM2Fermi-HAWC-VERITAS_final.ova):

1. Open virtual box, click on the File menu and choose "Import appliance"
2. Click on "Open appliance", and select the file GRB_VM2Fermi-HAWC-VERITAS_final.ova you just downloaded. Then click "Next" ("Continue" on Mac)
3. Just click on "Import" and wait for VirtualBox to import the Virtual Machine

4. Voit la', the VM should show up in the list of installed VM.

   Warning
   DO NOT start it yet. You need to do some configuration before, see below.

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1. If you did not use the old virtual machine, you need to create a folder to be shared with the new virtual machine. Therefore, create ON YOUR LOCAL SYSTEM a directory called GRBWorkdir. This directory will be shared between your computer and the VM, so that all files you will generate within it will be visible from both. If you use to have the old virtual machine, you should already have this.
2. Share the GRBWorkdir folder between your computer and the Virtual Machine. See the following video (watch it on YouTUBE if it does not work for you on confluence) and the instructions below:
   
   

1. 1. Open Virtual Box, and click on your virtual machine (usually called GRB_VM2 machine), then on Settings.
   2. Go to "Shared folder" on the list on the left

   3. click on the only shared folder present in the list, then on the "0" icon, then select the folder you just create on your local system. Verify that "GRBWorkdir" is the 'Folder Name' (if you use another name IT WON'T WORK!)

      Info
      When you open the virtual machine you will find the GRBWorkdir directory in the home of the grb user (~/GRBWorkdir). All files you create there will be available on your computer even when the virtual machine is powered off.

Using your Virtual Machine

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