Since its introduction, the Unified Extensible Firmware Interface has created a fair amount of controversy. UEFI was created through an industry consortium as an evolutionary step up from BIOS, the simple firmware long used when starting a computer to initialize all the components and load the operating system. Among its advanced features, UEFI includes an option called Secure Boot, which requires that any software used before the operating system starts, or after it shuts down, has been signed by a certificate authority.
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After a crazy year for HP that included a failed tablet, a hasty decision to abandon the PC business (a decision now abandoned), and a CEO shakeup, the company seems eager to get back to business as usual.