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2. How to upgrade from 32-bit to 64-bit version of Windows 10 - AOL

   www.aol.com/news/upgrade-32-bit-64-bit-212659036...

   If you want to upgrade a system from Windows 10 32-bit to the 64-bit version, you first need to determine whether the processor has 64-bit support, 2GB of memory, or more, and whether the ...

3. Windows Boot Manager - Wikipedia

   en.wikipedia.org/wiki/Windows_Boot_Manager

   The Windows Boot Manager (BOOTMGR) is the bootloader provided by Microsoft for Windows NT versions starting with Windows Vista and Windows Server 2008. It is the first program launched by the BIOS or UEFI of the computer and is responsible for loading the rest of Windows. [1] It replaced the NTLDR present in older versions of Windows.

4. UEFI - Wikipedia

   en.wikipedia.org/wiki/UEFI

   Standard PC BIOS is limited to a 16-bit processor mode and 1 MB of addressable memory space, resulting from the design based on the IBM 5150 that used a 16-bit Intel 8088 processor. [8] [34] In comparison, the processor mode in a UEFI environment can be either 32-bit (IA-32, AArch32) or 64-bit (x86-64, Itanium, and AArch64).

5. BIOS interrupt call - Wikipedia

   en.wikipedia.org/wiki/BIOS_interrupt_call

   BIOS interrupt calls perform hardware control or I/O functions requested by a program, return system information to the program, or do both. A key element of the purpose of BIOS calls is abstraction - the BIOS calls perform generally defined functions, and the specific details of how those functions are executed on the particular hardware of the system are encapsulated in the BIOS and hidden ...

6. Booting process of Windows - Wikipedia

   en.wikipedia.org/wiki/Booting_process_of_Windows

   In all versions of Windows 9x except ME, it is also possible to load Windows by booting to a DOS prompt and typing "win". There are some command line switches that can be used with the WIN command: with the /D switch, Windows boots to safe mode , and with the /D:n switch, Windows boots to safe mode with networking.

7. WoW64 - Wikipedia

   en.wikipedia.org/wiki/WoW64

   In computing on Microsoft platforms, WoW64 (Windows 32-bit on Windows 64-bit) is a subsystem of the Windows operating system capable of running 32-bit applications on 64-bit Windows. [1] It is included in all 64-bit versions of Windows, except in Windows Server Server Core where it is an optional component, and Windows Nano Server where it is ...

8. Option ROM - Wikipedia

   en.wikipedia.org/wiki/Option_ROM

   An option ROM for the PC platform (i.e. the IBM PC and derived successor computer systems) is a piece of firmware that resides in ROM on an expansion card (or stored along with the main system BIOS), which gets executed to initialize the device and (optionally) add support for the device to the BIOS.

9. Comparison of bootloaders - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_bootloaders

   Note: The column MBR (Master Boot Record) refers to whether or not the boot loader can be stored in the first sector of a mass storage device. The column VBR (Volume Boot Record) refers to the ability of the boot loader to be stored in the first sector of any partition on a mass storage device.