how to remove partition

Hi,
My C drive have unallocated partiton at the beginning, then system reserved and then the local C drive. How can i get ride of the unallocated space at the beginning of the drive?

First: Create a 3rd party disk image of what you have now, so if anything goes wrong.. the routine and regular use of disk imaging is endlessly recommended here.

Use a 3rd party partition manager e.g. Minitool Partition Wizard.
Delete the 1st partition.
Move the other partition(s) to the left of 'C:' to the 'left'.
(There should be a small one not shown in Disk Management).
Then you can extend C: (leftwards) into unallocated space.

You will see the layout on the GUI- nothing actually changes until you click 'Apply'. The change will take some time.

Minitool Partition Wizard has helpful videos immediately available.
You can find more videos on Youtube.

Note: you seem to be missing a Recovery partition.

Thank you for the response, I will give it a try!

Your drive doesn't have the usual partitions order or size. Please tel us a little story of this installation.

As you have a EFI partition I would say that your drive is a UEFI-GPT.
So you probably have
- Unallocated - 2G
- EFI - 400M (very big)
- MRR - 16M (not shown)
- C: - 929G

As the Unallocated is on the far left and also the EFI is huge (normally it is 100M) this is what I would do:
- Create a disk image of the drive on an external drive
- Boot from the image creator rescue drive and clean the above drive.
- From the drive image created, drag and drop the partitions in this order:
- EFI - Resize to 100M
- MSR - 16M
- C: - resize to max

What program you use for disk image creator?
As Dalchina already noticed, why it hasn't have a Recovery partition?