I would like to install the 32-bit version of Ubuntu 12.04 on my computer alongside windows Vista. I downloaded the ISO file from the Ubuntu website. Then I formatted my empty / blank disc, and dragged the ISO file from my downloads folder to my disk.
I assumed that was all I needed to do, but when I rebooted my computer and selected my disk from the boot menu, it just booted up Windows regularly.
How can I install Ubuntu on my computer alongside Windows Vista?