Delete the recovery partition located between the C drive and the D drive.

Delete the recovery partition between the C drive and the D drive#

Click on This PC -> Manage -> Disk Management in order.

You can see from the above image that there is a recovery partition between the C drive and the D drive. This prevents the C drive from being extended even if the D drive is deleted, and the partition in between cannot be deleted by right-clicking.
Enter cmd.
Enter the command to delete the recovery partition.

Microsoft Windows [Version 10.0.19044.1620]
(c) Microsoft Corporation. All rights reserved.

C:\WINDOWS\system32>diskpart

Microsoft DiskPart version 10.0.19041.964

Copyright (C) Microsoft Corporation.
On computer: LAPTOP-CHL12PRU

DISKPART> list disk

  Disk ###  Status         Size     Free     Dyn  Gpt
  --------  -------------  -------  -------  ---  ---
  Disk 0    Online          465 GB  6144 KB        *
  Disk 1    Online          931 GB      0 B        *

DISKPART> select disk 0

Disk 0 is now the selected disk.

DISKPART> list partition

  Partition ###  Type              Size     Offset
  -------------  ----------------  -------  -------
  Partition 1    System             260 MB  1024 KB
  Partition 2    Reserved            16 MB   261 MB
  Partition 3    Primary            248 GB   277 MB
  Partition 4    Recovery           974 MB   249 GB
  Partition 5    Primary            215 GB   250 GB

DISKPART> select partition 4

Partition 4 is now the selected partition.

DISKPART> delete partition override

DiskPart successfully deleted the selected partition.

Now:
Insert image description here

Extend the C drive to the entire physical solid-state drive.
On the D drive, right-click -> Delete Volume.
On the C drive, right-click -> Extend Volume.
Final result.