Windows 10 – How to Extend Unallocated Space to C: Drive

disk-managementpartitioningwindowswindows 10

I am using a machine with Windows 10.

After shrinking the size of the partition D: using Disk Management, I got 215.78GB Unallocated.

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Now, I want to Extend the Volume of the partition C: with the Unallocated space and for that, I right-clicked and can't press the "Extend Volume…" as the button is inactive.

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In order to extend my C: partition, I have tried what this answer suggests

  • create a new partition in the free space
  • move everything from D to there (turn of the page file first, and activate it again at the end
    of the whole operation!)
  • delete D and relabel the new partition to D
  • After that, you can expand C into the free space (and also the new partition, if you want it to be as large as D originally was).

But still didn't solve my problem. Now my disk looks like the following

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How do I proceed in order to allocate the unallocated space to my C: drive?

It seems that the partitions Healthy are the one's coming in between me and my solution as, as it points out here

You can add more space to existing primary partitions and logical
drives by extending them into adjacent unallocated space on the same
disk. To extend a basic volume, it must be raw or formatted with the
NTFS file system. You can extend a logical drive within contiguous
free space in the extended partition that contains it.

And those two may be the adjacent to the C: drive.

Best Answer

The 1st partition doesn't matter. It's only the 3rd partition which sits "between" C: and the empty space.

Use something like GParted Live CD to move the whole partition all the way to the right. This will result in empty space immediately next to C: and you'll be able to use "Expand".

(GParted can also resize NTFS partitions itself, but I probably wouldn't recommend doing so for the system partition.)