Ubuntu 11.04 Installation
 

Hey guys. I have just finished getting Ubuntu 11.04 onto my CD and have successfully "tried" it out. Now I just started to install it but came upon a screen titled Allocate Drive Space. On this screen it says Quit Back and Install Now. I clicked Install Now and it says "No root file system is defined. Please correct this from the partitioning menu."
I have no idea what this means so any help os very much appreciated.

P.S. I want to install it so that I can use Windows 7 and Ubuntu both, so at boot time I can choose which OS to use. I already have Windows 7 on this machine.

Did you get the server or desktop version?
Also did you resize windows7 using it's disk utilities to provide free space?

I downloaded the desktop version. I havent't resized anything and really am not sure how to go about doing that. If this is any helpful- At the top of the allocate drive space window it shows a long orange bar and a small blue bar attached to it. The blue bar is 14.6GB and is labeled sda3(ntfs).

right-click "My Computer" select "Manage" select "Manage Disks" select the wins partition resize.
Wins7 will only resize by 50%, make sure you defrag first.

O.k. and will defrag be one of the options in that path?

Defrag is in System Tools menu.

I clicked on manage >> disk management but cant see anything related to partition resizing. I am defragging right now though.
I feel nervous because I don't want any programs on Windows to get destroyed like my Visual Studio :0

Edit: If I right click the C: drive it says shrink volume if thats what you mean?

Yes
post output of
or
to see how many partitions your machine has.

see u can install ubuntu in a easy manner like a software
insert cd in windows open it
see it contains wubi.exe double click on wubi.exe
than if it ask to run it as administrator in windows 7 run it as administrator
than a simple menu will showed showing install drive select the drive in which u want to install it
installation size select the size how much u want to give to ubuntu
enter password for ubuntu in password field
than click install
the installation will start and when it will be finished it will ask u to restart and after restart select ubuntu from boot menu than it will finalize the installation and after few moments u will be showed the login menu.

O.k. Thanks a ton guys. I finally got Ubuntu installed!

wubi or grub2?

Wubi. The dual boot is working perfect as well. :)