You may want to check that the recovery partition is really empty first (or at least, that it has no recovery image that you may want to preserve, which should at least occupy around 3GB of the partition).
To do that, you can assign a drive letter to the partition with diskpart
:
![enter image description here](https://cdn.statically.io/img/i.sstatic.net/5MsAe.png)
Make sure you pick the correct recovery partition (since you have two) when enter select volume N
.
Once you've confirmed that, you can remove the drive letter with remove all
and delete the partition with delete volume
. Then you may either create a new partition with the space released or extend your My Documents (D:)
to the end of the disk with Disk Management
. Just right click on either the Unallocated
space or My Documents (D:)
and you'll see your available options.
Free Space
and% Free
, which apparently consists of bogus values for unmounted drives.