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Abstract

The disclosure is directed to a method of managing data storage. The method includes detecting an unusable memory block. The unusable memory block is in a set of user accessible memory blocks of a memory device. The memory device includes the set of user accessible memory blocks, a set of defective memory blocks, and a set of replacement memory blocks. The set of user accessible memory blocks includes not more than one half of a total number of memory blocks of the memory device and includes memory blocks from both halves of the memory device as addressed by a significant address bit. The method also includes indicating that the unusable memory block is a defective memory block and includes allocating a replacement memory block from the set of replacement memory blocks to the set of user accessible memory blocks.

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First Claim