Loading Ubuntu from Grub
Well, the Ubuntu Live CD (version 9.04) offers this possibility, i.e. installing Ubuntu from within Windows (to choose from the menu).
When you follow the installation steps, you are also offered the possibility to dedicate as much space of your hard disk to Ubuntu as you want
If you want to install from the Live CD after a boot with this CD, you are not offered this possibility and it is assumed that all of your hard disk is dedicated tu Ubuntu (in my case 160 GB), which I do not want.
Dedicating only 8 GB of hard disk (creation of virtual disks), with the install from within Windows , took more than 2 hours!!
Imagine the time it would take for 160 GB.
I think I am going to uninstall Ubuntu, create a Live CD with Suse, and retry an install.