I followed the steps for sharing folders between windows 7 and Ubuntu in Virtual Box. Despite of that the folder appears with a X sign and give me the following message when a try to open it:
The folder content could not be displayed
When I choose
Shared Folder from the Virtual Box
Device menu the following is written below:
On the system page , you have asigned more than 50% of your computer's memory (2.93) to the virtual machine ...