Hi,e_espinal
Thank you for your answer
I have already seen it, it talk about:
"Note: There must be free space right after the partition that you want to extend.
If you have two partitions on a disk (C: and D:), and you want to extend the first partition (C:),
your unallocated disk space should be between the first and the second partition (after C: and before D:)."
so i should use any third party to move the unallocated disk space?