+               #define VIRTUAL_MEMORY_BLOCKS              (VIRTUAL_MEMORY_BYTES / VIRTUAL_MEMORY_BLOCK_SIZE)
+               
+               /** Total number of logical drives within the device - must be non-zero. */
+               #define TOTAL_LUNS                          1
+               
+               /** Blocks in each LUN, calculated from the total capacity divided by the total number of Logical Units in the device. */
+               #define LUN_MEDIA_BLOCKS                   (VIRTUAL_MEMORY_BLOCKS / TOTAL_LUNS)