Ubuntu – How much disk space is allocated in Ubuntu for a new user

As it says, you need to increase the partition. Resizing the virtual disk, just changes how big partitions can be. You can't resize an active filesystem so the easiest way to do this is:

1. Boot the VM to a LiveCD ISO of Ubuntu (what you installed from should do but a later/earlier ISO will work too)
2. When asked click Try Ubuntu
3. Load gparted aka Gnome Partition Editor. I think it's installed on every CD but you might have to grab it from the Software Centre.
4. Find your disk, right click it and go through the resize wizard.
5. Restart the VM without the LiveCD and you should have more free space.

If you think you have some gigantic files that disk analyzer is not seeing for some reason, you may use ls to look for large files. Try this for example: ls -alrS in your home folder.

Is this a wubi installatoin shared with win32 files? A few weeks ago I encountered a similar issue on a wubi system that was installed by a friend. As it is in your case, the disk analyzer was showing a really high value for home folder, much more than the sum of its sub-folders. I cant comment on why disk analyser was behaving in this way, but the approach I took in my case was to do a clean install of Ubuntu on a dedicated partition. Of course that is not a very good solution, but if this is a relatively new system, it might be a reasonable workaround.

Hopefully someone else can shed some light on why disk analyzer is behaving in this way, and how to make that disk space available.