Patent ID: 8365026

Claim:
A method for performing a fail test in a nonvolatile memory device, the method comprising: performing a fail test for a selected memory cell block of a plurality of memory cell blocks to determine whether the selected memory cell block is a good block or a bad block, wherein each of the memory cell blocks has a block information store for storing good block information; storing a predetermined data as the good block information in the block information store of the selected memory cell block when the selected memory cell block is a good block; and repeating the act of performing a fail test for a selected memory cell block and the act of storing a predetermined data as the good block information for the remaining memory cell blocks, wherein each of the memory cell blocks having the predetermined data stored in the block information store of the respective memory cell block is determined to be a good block, and wherein each of the memory cell blocks not having the predetermined data stored in the block information store of the respective memory cell block is determined to be a bad block.