After updating windows i now have a Local Disk D: partition showing in 'This PC' wondering where it came from and what it is for?  To fix the issue, try the following suggestions:
1] Hide the logical drive
The drive is necessary to recover Windows 10, but it virtually occupies space. We could hide the partition so that it doesn’t appear in File Explorer.
However, if you actually want to remove the extra partition, it isn’t possible through Disk Management. They don’t show the option for the same. You may need to follow these suggestions.
2] Using third-party software to delete it
While the Disk Management might not work, third-party Partition Manager software will be able to help you delete the partition.

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