[ubuntu] Help formatting and merging partitions?

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http://ubuntuforums.org – Well, i'm no computer genius, I need help. I want to merge all my partitions into 1 and then format, i will be installing ubuntu again, i just need to wipe everything out, i just don't know how to merge these partitions, i dont even know what they are for. I already deleted the 2 windows partitions i had (which are now allocated) but i have absolutely no idea what the others are, heres a picture. any help will be apreciated :D (Hardware)