An electronic apparatus and a method for resuming from hibernation are disclosed. The electronic apparatus comprises an external storage, a main memory, an image generating circuit and a page moving circuit. The image generating circuit writes pages from the main memory into the external storage to generate a hibernation image file during a hibernation process. The page moving circuit according to the hibernation image file sequentially writes the pages from the external storage back to a continuous page range of the main memory during a resume process. The resume process is later than the hibernation process.