Abstract: The instant disclosure provides a multi hard-disk file management system and a method thereof. The multi hard-disk file management system comprises at least one external hard disk, a host computer and a file database. The external hard disk has an identifier and a file contents directory. The host computer runs a multi hard-disk file management program to manage the external hard disks. The file database is built in the host computer or a cloud computer. When the external hard disk is connected to the host computer, the identifier and the file contents directory corresponding to the external hard disk are stored in the file database by operating the multi hard-disk file management program.

Abstract: Disclosed is a two-way adjustable structure of hard disk box, comprising a first board, a first side wall, a second side wall and a plurality of fixing bolts. The first board has a first surface and a second surface. The first side wall is vertically mounted at one side of the first board, and is divided into a first portion and a second portion by the first board. The second side wall is vertically mounted at the other side of the first board, and is divided into a first portion and a second portion by the first board. Each pair of some fixing bolts respectively pass through the first side wall and the second side wall at two symmetrical positions. A first accommodating space and a second accommodating space are formed by the first board, the first side wall, and the second side wall.