VBox Guest Additions ISO can't be mounted because of VERR_PDM_MEDIA_LOCKED (6 Solutions!!) - YouTube
VirtualBox Guest Additions Error 2022 || Unable to insert the Virtual Optical disk - YouTube
安装增强功能失败:Could not mount the media/drive C:\Program Files\Oracle\VirtualBox/VBoxGuestAdditions.iso_could not mount the media/drive 'c:\program files\-CSDN博客
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Resolved] Unable to install Guest additions in VBox 6.1 - General Help - TuxDigital Forum