__sector_rw
if (!__sector_rw(buf, sector, 0, count))
return __sector_rw(buf, sector, 0, 1);
if (!__sector_rw(buf, sector, 0x1000, count))
return __sector_rw(buf, sector, 0x1000, 1);
bool __sector_rw(uint8_t *, int, int, int);