Electronic device and control method thereof

The invention discloses an electronic device and a control method thereof. The electronic device comprises a storage circuit and a control circuit. The storage circuit can be used for storing data. The control circuit can be used for receiving a backup mapping table from the outside of the electronic device and enabling the control circuit to access the data in a physical address of the storage circuit according to the backup mapping table. The backup mapping table is generated by copying a mapping table. 一种电子装置及其控制方法，该电子装置包含一存储电路及一控制电路。该存储电路可用以存储一数据。该控制电路可用以从该电子装置的外部接收一备份映射表，并使该控制电路根据该备份映射表于该存储电路的一实体地址存取该数据。该备份映射表是复制一映射表而产生。