I have a PC with Windows 7 Ultimate (A) running on it. From within that OS I have VirtualBox running another Windows 7 instance (B).
Is there any way for the Windows 7 (B) to access files from Windows 7 (A)? Ideally I'd like to be able to access them without having to copy them into the VM instance running because I don't have a big enough hard drive to do so... The hard drive has a folder with 1.5 TB of data (on a 2 TB hard drive), so copying it to a VM instance just wouldn't work.
14 Answers
There are several ways to accomplish this.
You can use VBox's own Shared folders feature.
For this: Go to Settings of the Virtual Machine and then select: Shared Folders.
Click on Add Shared Folder button. Specify folder path and folder name.
In Virtual Machine you go to \\vboxsrv\
you would see your folders.
You can also Create a network share and access that share from within B to A.
5I assume you have your VM up and running. Follow these steps:
On the VM window, Go to Tools -> Insert Guest additions CD Image.

You'll see a new CD drive in My computer. open it and start "VBoxWindowsAdditions"
- Follow setup to install guest addition on the Guest machine. Reboot the guest.
- Next, open VM settings:

- Go to Shared Folders -> right click -> add shared folder -> add the folder you want to share:

- Your shared folder will appear under My Computer in the guest machine.
You can follow similar method for other operating systems too.
2Another option is just to copy files:
Select Virtual Machine and go to Settings - General - Advanced, there you can configure Shared clipboard and Drag'n'Drop support. I selected Bidirectional option for both.
Now you can drag-drop files between Host and Guest, also you can copy text in Host machine and Paste it on Guest VM (and vice-versa)
1The most simple way is to use USB Flash Memory:
1- Connect your USB Flash Memory to your computer.
2- Your flash memory should get recognized to your virtual machine in:
Setting > USB > Add new USB
3- Run your VB machine and go to removable drive as usual and explore your files.
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