An image forming apparatus includes a storage and an access unit, the storage being managed by using a plurality of partitions, and the access unit is configured to access a file stored in a predetermined partition. The image forming apparatus includes: an execution unit configured to execute repair processing in which, out of data and management information for managing the data included in the file, the management information is repaired; and an error detecting unit configured to detect an access error that has occurred as a result of the access unit accessing the file. In response to detection of the access error by the error detecting unit, the execution unit executes the repair processing.