unable to do partition c drive...

jhonsm007

Honorable
Jul 4, 2012
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0
10,680
i have 1TB hard disk which is 931GB user available,here i make partition of 500gb which is successful but when i make another partition of 300gb its showing 62618 mb available for partition,why this happening??
c drive is showing 531 gb free than what is the problem here?
please see image which help to understand easily...

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please help....