How Long does it take to install ubuntu 9.04

In my case it took exactly 19 minutes. Then I was up and running.

Depends on your system, and network connection, however on a computer that is approximately 4 years old it took me less than an hour to install. Normally installing Ubuntu takes really a short time, compared to Windows XP at least. It should definitely not take longer than two hours! Which step are you? and what is visible on the screen?

Hi :)

It shouldn't take more than an hour or 2. Please let us know your cpu speed, ram size and the amount of hard-drive space you are giving Ubuntu. Ideally these would be over 800MHz cpu, 512Mb ram and about 15Gb of hard-drive space.

Please can you try booting up from the Ubuntu Cd to the menu with "Try Ubuntu without changes to this machine", if you don't get that menu then this guide might help
https://help.ubuntu.com/community/BootFromCD
Choosing the "Try Ubuntu ... " option should get you to a working desktop which we call a "LiveCd session", if it works ;) Most versions of linux have this feature although they don't all have such a fancy menu. Ubuntu's LiveCd has firefox on the top taskbar and should have worked out your internet connection so having got a LiveCd session working you should be able to surf around and check that Ubuntu is going to work easily on the machine. Once you've done that then a dual-boot is better than wiping off an existing working OS, even if that is Windows ;)
https://help.ubuntu.com/community/WindowsDualBoot

Please let us know how this is going!
Good luck and regards from
Tom :)

i don't know what happen but i just restarted my computer and
reinstalled it and gave it 20 gb so i guess that did the job thanks alot guys

Brilliant, nicely done :)))
2nd time lucky is impressive, it took me quite a few attempts before i worked out what to do.
Anyway - congrats, regards and welcome to linux-land :)
Good luck from
Tom :))