good day fellas,
so I'm running windows and wanted to explore Linux OS, so I created 2 partitions on my harddisk (320gig hard disk).

so now I no longer want d Linux OS, I wanted to delete d partition which I installed the Linux which I've done already.
my problem and question is How do I remove dat partition totally and restore my HD to just one partition of d previous 320gig volume, because after deleting d Linux partition I still don't have d full 320gig ,it's just showing d memory assigned to d windows partition, even though I've deleted d Linux partition.
Thanks