Hard drive space smaller after installing windows 7 over ubuntu?
so i have a 500gb hdd in my laptop. i was curious about ubuntu so i installed it along side windows 7. only lasted about a day before i just wanted to wipe the whole thing and reinstall 7. since ive done that. my hard drive is only showing 280gb in windows 7. guessing the rest was a partition to ubuntu? but i figured that since i wiped the drive that it should have freed the space up. i didn't actually go through an uninstall for ubuntu, i just figured i could put windows back over it. how do i free up the old ubuntu partition or whatever? i went into repair but when i try to delete the partition it wont let me, i can click "new" on it, then after i can click "format" "delete" but once i do those it will say "extended" beside the partition. can't figure out how to exactly completely remove it so i have all my 500gb for 7 again. sorry if this didn't make sense, been working all day...exhausted.