A METHOD FOR RECOVERING ERASE-INFORMATION OF A FLASH MEMORY

摘要

PURPOSE: A method for recovering erasure information of a flash memory is provided to prevent the deterioration of access speed by recovering the recorded erasure information when the power is supplied to a storage device. CONSTITUTION: The final erasure frequency table is seared(S310). The erasure frequency table is recovered by referring to the MAP block(S320). It is checked whether the MAP change information exists in the spare area of the MAP block(S330). A physical block number recorded in the spare area is checked. The recovery completion of the erasure frequency table is checked(S350).