RESTORING STORAGE DEVICES BASED ON FLASH MEMORIES AND RELATED CIRCUIT, SYSTEM, AND METHOD

A solution for restoring operation of a storage device based on a flash memory is proposed. The storage device emulates a logical memory space (including a plurality of logical blocks each one having a plurality of logical sectors), which is mapped on a physical memory space of the flash memory (including a plurality of physical blocks each one having a plurality of physical sectors for storing different versions of the logical sectors). A corresponding method starts by detecting a plurality of conflicting physical blocks for a corrupted logical block (resulting from a breakdown of the storage device). The method continues by determining a plurality of validity indexes (indicative of the number of last versions of the logical sectors of the corrupted logical block that are stored in the conflicting physical blocks). One ore more of the conflicting physical blocks are selected according to the validity indexes. The selected conflicting physical blocks are then associated with the corrupted logical block. At the end, each one of the non-selected conflicting physical blocks is discarded.