VERR_ACCESS

Can appear when you trying launch VM with attached real disk.

Linux

Add current user to proper groups


sudo usermod -a -G disk $USER
sudo usermod -a -G vboxusers $USER

Stop VBox service and relaunch VBox as Administrator


taskkill /f /im VBoxSVC.exe

https://unix.stackexchange.com/questions/284704/verr-access-denied-when-trying-to-add-a-raw-disk-to-virtual-box