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added more special values
Line 28:
Line 28:
* 0xFFFB - last cluster within a chain
* 0xFFFB - last cluster within a chain
* 0xFFFC - reserved cluster
* 0xFFFC - reserved cluster
−* 0xFFFD
+* 0xFFFD - bad block (marked at factory) -- you should always see these in groups of 8 (8 clusters per NAND block)
−* 0xFFFE
+* 0xFFFE - empty (unused / available) space
Otherwise, the value stored within a slot in the FAT for a given cluster points to the next cluster in the chain, similar to the FAT used in DOS. Therefore, in order to figure out what clusters belong to what file, you must use the information in the FST to find the starting cluster for each file, and then follow each cluster chain.
Otherwise, the value stored within a slot in the FAT for a given cluster points to the next cluster in the chain, similar to the FAT used in DOS. Therefore, in order to figure out what clusters belong to what file, you must use the information in the FST to find the starting cluster for each file, and then follow each cluster chain.