Also known as: hos.
HOS stands for various terms. Discover the full forms, meanings, and possible interpretations of HOS across different fields and industries.
A host operating system (OS) is the original OS installed on a computer. Other operating systems are sometimes installed on a computer, in addition to the host OS, as guest operating systems. For the purposes of disk partitioning, a guest OS must be the same as the host OS. In virtualization, however, a guest OS can be a different from the host.
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