Unable to mount VirtualBox Guest Additions as a guest (Win7 host) - Ask Ubuntu
TechVolve: "VirtualBox Guest Additions" Installation error - Unable to insert the virtual optical disk
Could not mount the media/drive 'D:\......./VBoxGuestAdditions.iso' ( VERR_PDM_MEDIA_LOCKED)_jimmyleeee的博客-CSDN博客_verr_pdm_media_locked
Deep Sukhwani Blogs CS50 Appliance - Error \"Could Not Mount The Media/drive \'/Applications/VirtualBox.app/Contents/MacOS/VBoxGuestAdditions.iso\' ( VERR_PDM_MEDIA_LOCKED)\" When Trying To Install VirtualBox Guest Additions | BlogAdda
linux - VBox Guest Additions ISO can't be mounted because of VERR_PDM_MEDIA_LOCKED - Super User
linux - VBox Guest Additions ISO can't be mounted because of VERR_PDM_MEDIA_LOCKED - Super User
安装增强功能失败:Could not mount the media/drive C:\Program Files\Oracle\VirtualBox/VBoxGuestAdditions.iso-阿里云开发者社区
Resolved] Unable to install Guest additions in VBox 6.1 - General Help - DLN Community Forum
VirtualBox Guest Additions Error 2022 || Unable to insert the Virtual Optical disk - YouTube
linux - VBox Guest Additions ISO can't be mounted because of VERR_PDM_MEDIA_LOCKED - Super User