But, as a Key component, BIOS in the whole system still keeps its original scheme without many changes for the past twenty years, which has become a serious obstacle for PC advancement. Nowadays PC hardware platforms have had amazing changes and OS has also evolved from the early MS-DOS 1.0 to today Windows 8, Windows 10, and so on. 1 MB addressable space, PC AT1 hardware dependencies, etc. The legacy BIOS has developed two decades ago, and although it had improved a lot since then, basically it was based on the structure of 16-bit processor mode. They are most likely used in the BIOS (Basic Input Output System) to boot the operating system. In other words, they are called legacy and UEFI support. ![]() ![]() Mac computer users GPT whereas Microsoft uses both MBR and gpt. Giant companies are updating their systems to the modern day to be compatible with the software.
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