Trouble with deleting

I have a slim 160gb (CECH-2501A) w/kmeaw , i used the multiMAN to copy some movies from a NTFS external to my internal hdd , then i deleted the files but the space on hdd the free space didn't change on ps3 system information netheir on multiMAN . I've deleed around 22GB can anyone help me? and i only have 1 gb free


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I do not know what happened but the free space from files i've deleted is now showed,
i only went to the system information on multiMAN and then appear 23 gb free
But anyway thanks!