Because applications and services can be added into the boot process, security features such as factory-encrypted drives and software verification can be implemented in a pre-OS environment. BIOS, the newer system wins its biggest kudos in the area of security, by making it possible to prevent unauthorized firmware, operating systems or other UEFI drivers from running at boot time. That's a lot of hardware, considering that the entire Web contained merely 500 exabytes as of 2009 - only half one of those zettabytes. Plus, according to the UEFI Forum, UEFI will support hard disks up to 9.4 zettabytes (ZB). In addition, UEFI is programmable, so boot-time applications and services can be added to the boot process – which is generally a lot faster than with BIOS. How to set up a UEFI install of Windows 8ĭo enterprises need to worry about BIOS attacks?ĭespite a lack of an advanced boot option, UEFI works for Windows 8 Using UEFI to get a desktop ready for Windows 8īIOS management best practices for patching and updating That means a UEFI-based system can also support Ethernet, Wi-Fi and Bluetooth network connectivity, allowing a device to be diagnosed and repaired remotely even if the OS won't boot. In fact, Windows 8 UEFI can access all of a computer's hardware, including the mouse, USB ports, audio systems, graphic cards and network adapters. A UEFI-based computer provides a more advanced boot interface, offers more configurable options and supports additional hardware types. Although a UEFI system works a lot like the BIOS environment, UEFI provides enhanced control and manageability over the system's boot process.
Windows 8 desktops configured to use UEFI can address many of the limitations imposed by BIOS. Worse still, a computer that relies on BIOS is vulnerable to malware that can target the computer's boot sector before the operating system is even launched. The BIOS of yesterday was never engineered for today's computing environment. However, the BIOS must operate within a mere 1,024 KB of memory, can access only certain types of hardware and can work only with hard disks up to 2.2 TB. On a typical PC, the BIOS runs hardware-specific code that provides the first instructions to the motherboard upon startup and then passes control over to the operating system when things get going. And, to this day, BIOS continues to be used to boot most desktops. The BIOS also jumpstarted the operating system's boot process once that hardware was enabled. For years, the Basic Input Output System ( BIOS) provided the core functionality necessary to enable a computer's hardware when it's first turned on.
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