Guys, basically am using fedora now but really interested in trying ubuntu 12.04 so i want to know is there any ways that i can install ubuntu on fedora since both are Linux(Unix like OS) without foramtting because i have a very valuable data in my Hard-disk and also left with only 20GB space out of my 500GB HardDisk.

So, kindly let me know like is there anyway i can do this operation.

Thank You...!

Here are easy instructions to install Ubuntu:

http://www.ubuntu.com/download/ubuntu/download

But you must back up your valuable data to an external drive, I cannot recommend that you skip this step.

One actually could install two OS's in the same partition. It is not a newbie thing and I am not sure I could do it the first time and be sure.

So you are sure that 480 of your drive is actual data that is valuable? Snowpine may be correct that you should just get a cheap usb external and backup the data or a spare internal hard drive to store the data.

I run a lot of OS's from flash drives. They do fine for most stuff. I use handbrake and vlc on them and watch movies so they are fast enough for those tasks. An 8G drive is good enough to start. It may be a way to bridge over. Maybe partition off your data only to the end of the drive and then install to the front part.

If you have so much valuable data, you really ought to implement a backup strategy immediately.

What, he asked rhetorically, would you do if the hard drive failed? They are physical devices; they do wear out and fail.

Also, if you can dump some of that data off to other media, you should be able to free up enough space to run a VM for testing Ubuntu.