you made /,/usr and swap partitions??make sure that the filesystem type etc are right.there is no need of a /usr partition since linux would automatically create /usr(not a partition).you could have made a '/boot' or a '/home' partition instead.
by the by,you are trying debian??it is the toughest(to configure) linux distro i have ever seen.(and is the best).
and if you experiance any problems,post them here.
about dual partition howto;there are plenty of them in the net.i just did a quick search and got this.
all the best,