File locations for VirtualBox software and virtual machines can be confusing. This book covers Core from start to finish. Add just what you require instead of removing what you don't need. You have complete control over what is included, what hardware is supported, with nothing extra and no bloat. Give host and guest the same workgroup name. I set the option to auto-mount but I don't specify the mount point. Mak, Install Ubuntu on VirtualBox 12 Create and mount the shared folder A shared folder is a directory on your host operating system (i.e., Windows 10 or macOS) that is also accessible by the guest operating system (i.e., Ubuntu). – The Windows folder you’re sharing is called D:\vbox. However, someday, it was abruptly stopped working with one of my VirtualBox machine - terry - development. UBS Setting 6.8.1 UBS Setting 6.8.2 Implementation notes for Windows and Linux hosts Shared Folder Setting User Interface Setting 3 5 6 7 7 7 10 .