Quote Originally Posted by alex2035 View Post
I finally used your method and moved Wubi install of 11.10 to an ext4 partition on the same partition as Wubi install. I used the --no-bootloader option just in case.
Now I dont know how to proceed, should I install Grub in the HD install? then update-grub? then deinstall Wubi from Win? or deinstall Wubi first, could I boot 11.10 HD then? I dont think so. you see, I am a bit confused here. thanks for your help.

By the way, HD install is little faster on boot as Wubi, but not a difference launching or using programs. Worth it? not sure, except for security reasons.
First boot your migrated install. Then to install GRUB 2 to the sdX drive's MBR (sda, sdb, etc.)
sudo grub-install /dev/sdX
For most people that would be:
sudo grub-install /dev/sda
This will replace the windows bootloader and the next time you boot, you'll see the grub menu first and have to select windows at the bottom of the list.

I think it's worth it to migrate from a reliability/stability point of view. Speed, security? maybe but it depends on how you use the OS and possibly your computer specs.