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#11
You can use diskpart from command prompt to remove the letter D as recovery shouldn't have a letter.
Code:PS C:\WINDOWS\system32> diskpart Microsoft DiskPart version 10.0.16299.15 Copyright (C) Microsoft Corporation. On computer: X201 DISKPART> select volume D Volume 2 is the selected volume. DISKPART> remove DiskPart successfully removed the drive letter or mount point. DISKPART> exit