IBM ThinkPad T43 enthusiast installs 'almost' every version of Windows on the single-core laptop without using virtual machine — 26 years of Windows running bare metal, from 1996 Windows NT 4.0
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An IBM ThinkPad user boasts that they can install '(almost) all versions of Windows from NT 4 to 10 22H2' with driver support, without resorting to virtual machine (VM) technology.