Regarding udevadm

Hi, I am using udevadm info to get information about connected block devices. I have attached usb device and disabled auto mounting of it. I can see kernel logs that device is added and node is created. But when I use udevadm info --export-db, I can't see device info of /dev/sdb1 If I use udevadm monitor --kernel to monitor kernel udev events, I can see KERNEL[1419.590316] remove /block/sdb/sdb1 (block) KERNEL[1419.622381] remove /block/sdb (block) KERNEL[1430.528523] add /block/sdb (block) KERNEL[1430.564808] add /block/sdb/sdb1 (block) Why /dev/sdb1 is not getting displayed in case udevadm info ? Thanks, Rahul B.