Općenito nemam baš iskustva sa takvim programima, ali imam nekakav program koji služi kao čistać registra, temp foldera itd. , koji između ostalog ima i opciju "brisanja" praznog prostora na disku. Možeš birati koliko ćeš puta da ti se disk prebriše, ne znam da li radi pod dos-om, a zove se Ace Optimizer Utilities.
Program je shareware, ali 30 dana ga možeš isprobati bez ikakvih ograničenja.
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When you delete a file from Windows or Recycle bin, it does not actually erase the file's data from your disk. It simply marks the file as deleted so that you won't see or access the file again. Such deleted file's data exist in the free space of your disks. Therefore, unless and until those space get re-used for another file, the data contained by the file you just deleted is still there on your disk and can be retrieved by experts.