411 REFERENCE · Wikibooks
VirtualBox/Setting up a Virtual Machine
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
Windows
Ubuntu
Mac OS X (macOS Catalina, Mojave, High Sierra)
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Prevent malware infection by downloading software only from its licensed distributor. Avoid ready-made installation images or virtual disk images, as they may contain malware.