SAMSUNNG eXtended Sector Remapper (XSR) Pre-programming Guide is designed to help users write ROM-images to Samsung NAND flash memory. This Pre-programming Guide is designed to help users understand the memory structure of Samsung NAND flash memory.

Pre-programming is a method for writing ROM-images to NAND flash memory of Samsung Electronics by using GBBM2 (Global Bad Block Management 2) Scheme. XSR uses GBBM2 scheme for managing bad blocks in a volume. This Pre-programming Guide describes Bad Blocks occurrences in NAND flash memory, and Reservoir conception and formatting to handle GBBM2 scheme.

• Overview of XSR Pre-programming
• Description of XSR Architecture and Features
• Detailed Description of GBBM2 Scheme
• Prerequisite for XSR Pre-programming and Writing ROM-images to NAND flash memory
• Appendix: Spare Area Assignment

• XSR 1.5.1 Pre-programming Guide_v1.5