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Below is a screenshot of the Disk Management tool:

enter image description here

I'm trying to expand my Data (D:) partition, but the 'Extend Volume' option is greyed out. I have tried to extend the volume in command prompt using diskpart but the following error code was thrown: There is not enough usable free space on specified disk(s) to extend the volume.

Is there any way to extend that partition?

  • Only third-party software can help in your case. And I strongly recommend to backup your data before. But when you make backup you can simply remove D: and re-create it with the size you need. PS. You have 2 problems: a) unallocated space is behind the volume you want to extend; b) you have 4 basic volumes (primary partitions), so you cannot create any additional partition (primary or extended) for to use it as a temporary one. – Akina Dec 3 '18 at 13:17
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The D: partition is at the end of the disk, so cannot be extended beyond the end.

You need to move the partition so that the Unallocated space follows the partition, and then the extend option will become available.

Just to warn that an error in partition move can destroy the data on the disk, if partitions are over-written, so best to ensure that you have excellent backups for the whole disk before starting.

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