A
allan
Guest
Partitions make sense for any number of reasons, the two foremost being safety (if you keep data separate from OS, you won't lose it if you ever lose access to your boot drive and have to blow it away and reformat); and good housekeeping (keeping OS separate from data separate from cache files and paging file, etc). There is absolutely, positively no significant downside to partitioning your drive (unless it is very small).