I know this question has been asked, but I am looking for specific help with my partition selection.

I want to migrate my install from wubi to be a dual boot. When I installed it I choose a small, partition, around 30GB. I am following these instructions: https://help.ubuntu.com/community/MigrateWubi I see sda4 matches that size, but has mount point as '/host', am I okay to use this one?

EDIT: Here is a screenshot of my partitions. http://i.imgur.com/ozPe0.png

My windows partition is actually not there, that is down as sdb1, so safely out of the way?

I can confirm sda4 is the location of the 'virtual partition' and is an otherwise, unused 26GB partition. It's also where I would like to migrate to a full install to.