Is it possible to change the virtual HDD size of a Virtual Box VM?

Recently created a Windows 7 VM which takes up 25 GB of space. Unfortunately the Windows 7 OS itself take up about 18 GB which only leaves 7 GB for the rest of the VM. I want to expand the virtual partition to 60 GB so that I have much more free space on my Windows 7 VM. How can this be done?

 

Unfortunately it can't be done as far as I can tell. 18 gigs sounds high for the OS though - my Windows 7 folder is 13 gigs (I know, still pretty big). You might want to have a closer look at how the space is being used with a graphic disk analyzer like WinDirStat or SequoiaView.

 

There is a tutorial using GParted live in this link. I've used GParted before to successfully resize the virtual disk in VMWare.

 

Thanks, I didn't know about this. Here's another tutorial:

http://trivialproof.blogspot.com/2011/01/resizing-virtualbox-virtual-hard-disk.html