Samsung Electronics Co., Ltd.

Wonchuri Zoo

Kyung Ho Kim

Walter Jun

Robert Brennan

Chang-Eun Choi

Yang Yu

Chaesuk Lim

Jinhyuk Kim

Taekkyun Lee

Embodiments of the inventive concept include computer-implemented method for shadowing one or more boot images of a mobile device. The technique can include duplicating boot images to shadow partitions in a user area of a non-volatile memory device such as a flash memory. The technique can include detecting boot image corruption, and causing a mobile device to boot from the shadow partitions. The technique can include dynamically shadowing and releasing blocks used by the shadow partitions. The technique can include boot failure recovery and bad image preservation through firmware flash translation layer (FTL) logical to physical mapping updates. Boot image corruption failures can be recovered from and/or debugged using the shadow partitions.

Mobile flash storage boot partition and/or logical unit shadowing

A management method for a memory system executes a first memory system management sequence upon determining that the memory system was normally powered off, and a second sequence upon determining that the memory system was abnormally powered off. The first sequence allows immediate execution of a program operation at a valid data page location extracted from stored metadata, while the second sequence allows execution of a program operation only after programming dummy data to at least one erroneous page.

Management method for nonvolatile memory system following power-off

Growing community of inventors

Hwaseong-si, South Korea

Wonchuri Zoo