– transient shares, that are created at runtime and lost when the VM is powered off. – Permanent shares that are saved under VM settings. It is similar to network shares except that this does not require networking. Shared Folders enable you to exchange files between the host and guest VM.This in turn provides you with extra high and non-standard video modes, as well as accelerated video performance. Automatically resize the virtual machine windows once the guest additions are installed.Time synchronization – Even though Time on the guest OS might run at a different rate than that of the host, Guest additions ensure that the guest’s system time is synchronized with the host time.You can enable seamless Windows by pressing Ctrl+L. Seamless Windows enables windows displayed inside the virtual machine to appear side by side with that of host windows.

The guest additions are provided as a single CD-ROM image file called VBoxGuestAdditions.iso that is mounted on the Guest Operating system and then installed from there. Guest additions are special software packages shipped with Oracle VM VirtualBox that are installed inside a VM after the Guest OS installation to improve the performance and usability of the guest operating system. These include extension packs and guest additions. VirtualBox has other features that make it preferable to other Virtualization platforms. It is cross-platform and is available on Windows, Linux, macOS, and Solaris. You can run one or more virtual machines on one host system hardware at the same time. VirtualBox also lets you manage and run these virtual machines on the host systems. VirtualBox is a free and open-source application for creating virtual machines.