When using Windows virtual machines provided on Linux Workstations, you are strongly recommended to save data per session. All data will be lost when the virtual machine is rebuilt as needed without notice. There are several ways through which you can save files:

• Your home directory
• Dropbox
• Google Drive
• One Drive
• USB

To save works in your home directory, you need to set it up before starting the virtual machine.

• Start "Oralce VM VirtualBox"
• Select VM to be used, open “Settings”, go to Shared Folders
• Click on the icon with blue folder and plus sign
• Folder Path: /home/username/...
  Folder Name: MyDescription
  Check "Make Permanent"
• Click on "OK" to finish or add other shared folders if needed

Now you are ready to start Windows VM and save files in the home directory: under "Network / VBOXSVR / MyDescription", the UNC equivalent: \\VBOXSVR\MyDescription.

To save files on USB, your can use "Shared Folders" similar to home directory