I am planning to upgrade to ubuntu 13.04 from 12.10 when it is going to be launched on 25 April. My files storage memory is 300GB and I do not want to buy another external HDD to create a backup and save hours creating another backup.
There is another question in ask ubuntu with the same doubt but the answer in that question had made me lose all my data while upgrading to 12.10 from 12.04 earlier in the year.
How can I do the distro upgrade while keeping my files intact with a guarantee.