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  2. List of Microsoft codenames - Wikipedia

    en.wikipedia.org/wiki/List_of_Microsoft_codenames

    Cancelled. Panther was a 32-bit kernel based on Windows NT kernel. [105] [106] Pinball — High Performance File System (HPFS) "Pinball" is the nickname (as opposed to a codename) for HPFS because HPFS driver in Windows NT 3.5 is called PINBALL.SYS. [116] [117] [118] Piton — ReadyDrive: Feature introduced in Windows Vista to support hybrid ...

  3. Kernel (operating system) - Wikipedia

    en.wikipedia.org/wiki/Kernel_(operating_system)

    Hybrid kernels are used in most commercial operating systems such as Microsoft Windows NT 3.1, NT 3.5, NT 3.51, NT 4.0, 2000, XP, Vista, 7, 8, 8.1 and 10. Apple's own macOS uses a hybrid kernel called XNU, which is based upon code from OSF/1's Mach kernel (OSFMK 7.3) [41] and FreeBSD's monolithic kernel. Hybrid kernels are similar to ...

  4. Microsoft POSIX subsystem - Wikipedia

    en.wikipedia.org/wiki/Microsoft_POSIX_subsystem

    This subsystem implements only the POSIX.1 standard – also known as IEEE Std 1003.1-1990 or ISO/IEC 9945-1:1990 – primarily covering the kernel and C library programming interfaces which allowed a program written for other POSIX.1-compliant operating systems to be compiled and run under Windows NT. The Windows NT POSIX subsystem did not ...

  5. Processor Control Region - Wikipedia

    en.wikipedia.org/wiki/Processor_Control_Region

    Processor Control Region (PCR) is a Windows kernel mode data structure that contains information about the current processor. It can be accessed via the fs segment register on x86 versions, or the gs segment register on x64 versions respectively.

  6. Windows kernel - Wikipedia

    en.wikipedia.org/wiki/Windows_Kernel

    Windows kernel may refer to: Windows 9x kernel , used in Windows 95-98 and ME Windows NT kernel , used in all Windows NT systems (including Windows NT, 2000, XP, Vista, 7, 8, 8.1, 10 and 11)

  7. Architecture of Windows NT - Wikipedia

    en.wikipedia.org/wiki/Architecture_of_Windows_NT

    The Windows NT operating system family's architecture consists of two layers (user mode and kernel mode), with many different modules within both of these layers.. The architecture of Windows NT, a line of operating systems produced and sold by Microsoft, is a layered design that consists of two main components, user mode and kernel mode.

  8. ntoskrnl.exe - Wikipedia

    en.wikipedia.org/wiki/Ntoskrnl

    ntoskrnl.exe (short for Windows NT operating system kernel executable), also known as the kernel image, contains the kernel and executive layers of the Microsoft Windows NT kernel, and is responsible for hardware abstraction, process handling, and memory management.

  9. I/O request packet - Wikipedia

    en.wikipedia.org/wiki/I/O_request_packet

    I/O request packets (IRPs) are kernel mode structures that are used by Windows Driver Model (WDM) and Windows NT device drivers to communicate with each other and with the operating system. They are data structures that describe I/O requests, and can be equally well thought of as "I/O request descriptors" or similar.