You should be able to. Ubuntu (In fact, almost all Linux distributions) comes with it's own bootloader (Usually GRUB).
i was just wondering is it possible to create a second partition to install ubuntu on a computer with windows on it? i would like to try it as a system instead of using it with a VM..
Even if you don't have free space on your HDD, I think that Ubuntu's installer should have an option in the disk partitioner to resize existing partitions.
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