I've heard of such installers before, but I'm a little bit curious as to how it works. For example, how does GRUB boot the kernel from an NTFS-based filesystem? I was always under the assumption that GRUB was incapable of reading from NTFS partitions.
I'm also wondering about the kernel itself. Did the developers of Wubi compile the ntfs-3g driver into the kernel image? And did they hardcode in the 'system_virtual_disk' kernel parameter? I haven't been able to find any other reference to this parameter on the web.
Anyway, I think the biggest problem with the project at this point is that the ntfs-3g driver which they use is far from perfect, so the lack of stability and speed will likely discourage anyone serious about Linux from using Wubi. Although I'm sure many Windows users would love the outward simplicity of this program.
"Technological progress is like an axe in the hands of a pathological criminal."
All my posts may be freely redistributed under the terms of the MIT license.