Mount Ext4 partitios in Windows

Ubuntu partitions are incompatible with Windows, we can not read and write to them  from widows. Ext4 partitions can be read  from windows if you install a simple utility in Windows.
 Download ext2fsd from

  

http://sourceforge.net/projects/ext2fsd/files/Ext2fsd/0.51/

 Find out  Ext2Fsd-0.51.exe from the above site and install it. The following screen shots are self explanatory.

how to clone ubuntu installation

Here is a quick way to  build an exactly similar  ubuntu installation on another computer.

Run
$ dpkg --get-selections >my_pakages

on the machine that you want to clone. Install a clean copy of Ubuntu on the target machine. Copy the file my_packages to the target machine.
Run the following command on the target machine.
$  sudo dpkg --set-selections < ./package_names
$  sudo apt-get -u dselect-upgrade

 Done.