I actually have a 1 TB HDD and I already split the drive in half for both OSes. Windows 7 is already set to 500 GB and the remaining space will be for Linux Ubuntu. (This is not the problem I am running into however).
When comes the time to install Linux Ubuntu, there is the point where I am stuck...
I would like to know what are the settings I should put at Linux Ubuntu as main OS so I can jump to Windows 7 whenever I want and go back to Linux Ubuntu whenever I want when I'm on Windows 7.
There is no "recommended" settings. What is happening when you dual boot, is that you split your Hard Drive in whatever size partitions you like, and then you install both the operating systems. Then a boot loader (grub most possibly in your case) will prompt you as to what OS you would like for it to start loading. Once you are inside the OS, the "settings" of the hard drive's partition sizes, no longer effect your performance (I assume of course that you have given enough space to Windows and Linux, for it to operate normally).
Personally, since Linux is not as HD hungry as Windows (but again, depends), I would given the majority of the HD at Windows (70~80%) and i would use Windows's space, from inside Linux, to store data. That 20~30% of HD that Linux will get, seems a pretty good amount for it.
Once you install Ubuntu along side Windows 7. You will have to reboot your computer every time you want to switch between Ubuntu and Windows.
When you reboot the computer, you will see a (grub) menu that will let you choose between Ubuntu and Windows. If you don't select anything, grub will wait a few seconds and continue to boot Ubuntu.
If you want to "jump" to Windows, you will have to restart the computer, and choose "Windows" from the grub menu. When you are done with Windows, and want to "jump" back to Ubuntu, you will have to restart the computer again.
Hope this helps
