Not fixed with work around. Mouse pointer is not visible in Virtual Box Guest OS... Restart is not enough.

The Virtual Machine reports that the guest OS doesn't support mouse pointer integration in the current video mode

Might caused by my previous action removed the "Empty" drive while adding CentOS-7-x86_64-DVD-1810.iso to install OS.

After Manual added "Empty" drive, Reference URL: https://askubuntu.com/questions/573596/unable-to-install-guest-additions-cd-image-on-virtual-box

Then at OracleVM VirtualBox windows(host)
Devices > Optical Drive > Choose disk image
Then select VBoxGuestAdditions.iso

Then go Guest OS,
Try to figure out how to make VBoxLinuxAdditions.run to be execute, so can be start the installation for "VBox_GAs_6.0.4".
Once run it, then will prompt to ask for "root"(although it didn't mentioned on screen) password.

After Install, make sure Shutdown to boot up system again, as Restart is not enough.


After all steps above, mouse pointer still invisible.

I thought it was fixed was due to I switched Pointing Device to USB Tablet.