Host : Windows 10
Guest : CentOS 7.2 64x
Tool : Oracle VirtualBox 5.2
For an unknown reason, your VM won’t startup and hangs on boot. You have tried like me many VBoxManage commands, transform raw to vdi, file access rights, … but you’re still on this screen:
When your machine gives you the boot choice, press “e” to enter the grub configuration. Look for “rhgb” parameter in the kernel boot commands and delete it.
This command should be in the line starting with “linux16”.
Add the command “systemd.unit=multi-user.target” at the end of this line.
Press Ctrl+x to start the VM and maybe everything will work fine.