Sandisk Technologies Inc.

YunKyu Lee

Minyoung Kim

Sangyun Jung

SeungBeom Seo

Minwoo Lee

Aspects of a storage device are provided for handling detection and operations associated with an erase block type of the block. The storage device includes one or more non-volatile memories each including a block, and one or more controllers operable to cause the storage device to perform erase type detection and associated operations for single blocks or metablocks. For instance, the controller(s) may erase the block prior to a power loss event, perform at least one read of the block following the power loss event, identify the erase block type of the block in response to the at least one read, and program the block based on the identified erase block type without performing a subsequent erase prior to the program. The controller(s) may also perform metablock operations associated with the identified erase block type. Thus, unnecessary erase operations during recovery from an ungraceful shutdown (UGSD) may be mitigated.

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SeongNam, South Korea

YunKyu Lee