Have blkid reports on newly added devices

[T o n g <mlist4suntong@yahoo.com>]

Hi,

How can I make blkid reports on newly added devices (eg, usb-pen)?

My newly inserted sdc1 has already been mounted, yet blkid can't report 
on it:

$ df | grep sdc
/dev/sdc1              3862528    428384   3434144  12% /mnt/camera

$ blkid | grep sdc || echo no found 
no found

Any workaround? 

Thanks

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