I have an old desktop with ubuntu 10.04 running on it. It's installed through wubi on a windows drive.
What I want to do is -
1)Install the latest 12.04 LTS on my desktop.
2)Completely remove windows from my system (all partitions including the one from which ubuntu currently runs) i.e. completely erase all data from the current disk.
Issues I'm encountering while trying to achieve the above -
1)No internal cd/dvd drive , although I do have an asus external dvd writer that could be plugged in through a usb port. However, I'm not sure if the old desktop would allow booting through an externally plugged in usb dvd writer (firmware might not support this) in case I do try this using a ubuntu bootable disk.
2)Similarly, the old firmware might not allow booting from a usb pen/flash drive in case of a bootable ubuntu usb drive.
I'm not sure if the motherboard firmware could be upgraded and perhaps I probably want to avoid this to prevent corrupting firmware and spending time on this.
So, what I want to know is
1) What are my options/tools to completely erase everything from the disk ?
2)How to install Ubuntu 12.04 LTS Desktop version on the hard drive given the above constraints ?
Edit - Just for your information , the motherboard is Asrock conroe945g - dvi.