Would it be safe to uninstall Windows XP on my computer and just boot to Ubuntu? I am using an older computer with a 40 gig HD, 3GB processor and just under 2 GB ram. I do not have much space left on my drive. If can be don
No need to uninstall XP, Ubuntu works OK in dual boot. If you are beginning with linux, dual boot is pretty useful.
For that configuration you can do with a 4 GB swap and a 5 GB as a minimal for the OS.
Also making a backup of your sensitive data before installation is still valid.
Yes, but you should backup your sensitive data before installation.
Minimal Requirements for Ubuntu Desktop:
There's also variants of Ubuntu like Lubuntu or Kubuntu which they will run on even weaker PC.