A method and a system are disclosed for storing initial data from an image detecting device in a camera system initial storage medium and making the data accessible. The initial data is stored consecutively in blocks, where file specific pointers representing the starting address for each stored file and file sequence, and dynamic memory pointers that points out the next writable address, are managed and stored during real time writing of the data. The data is made accessible through a virtual representation of the data in a virtual file system with a format known by an external storage medium controller, the virtual representation being related to the file specific pointers.