To install Genymotion click this link “How To Install Genymotion (Android Emulator) on My OS / Ubuntu“.
Step by step to access the files present in the sd card of Genymotion (Android emulator) :
- Create a new folder in your home directory (Ex : /home/dnd/Share_Genymotion).
- Open VirtualBox and select the Virtual Machine (Image) on the left pane.
- Click on the “Settings” icon.

- Select Shared Folders tab on the left side, and then click on the “Add Share” icon on the right side to add a new Shared Folder within VirtualBox.
- Choose the Folder path as Others and browse to the newly created folder (Ex : /home/dnd/Share_Genymotion).
- Select the check boxes as per your requirement and then click on the “OK” button.
- Read Only: To prevent modification of its contents inside Android VM.
- Auto Mount: To mount the folder automatically on startup.

- Start your VM as usual from the Genymotion software
- Open Astro File Manager in Android (Genymotion), and then browse to /mnt/shared to open the shared folder.

WOW!, very clear instructions, works like a charm!