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HP EliteBook is a line of business-oriented laptop computers made by Hewlett-Packard (), [1] marketed as a high-end line positioned above the ProBook series. [2] The line was introduced in August 2008 [3] [4] as a replacement of the HP Compaq line of business laptops, and initially included mobile workstations until September 2013, when they were rebranded as HP ZBook.
User-Mode Driver Framework (UMDF) is a device-driver development platform first introduced with Microsoft's Windows Vista operating system, and is also available for Windows XP. It facilitates the creation of drivers for certain classes of devices.
For security reasons, 64-bit versions of Windows Vista allow only signed drivers to be installed in kernel mode. [ 1 ] [ 2 ] Because code executing in kernel mode enjoys wide privileges on the system, the signing requirement aims to ensure that only code with a known origin executes at this level.
All 32-bit editions of Windows Vista, excluding Starter, support up to 4 GB of RAM. The 64-bit edition of Home Basic supports 8 GB of RAM, Home Premium supports 16 GB, and Business, Enterprise, and Ultimate support 128 GB of RAM. [19] All 64-bit versions of Microsoft operating systems impose a 16 TB limit on address space.
Common device driver compatibility issues include: a 32-bit device driver is required for a 32-bit Windows operating system, and a 64-bit device driver is required for a 64-bit Windows operating system. 64-bit device drivers must be signed by Microsoft, because they run in kernel mode and have unrestricted access to the computer hardware. For ...
Therefore, PCs running 64-bit versions of Windows Vista SP1, Windows Vista SP2, Windows 7, Windows Server 2008 and Windows Server 2008 R2 are compatible with UEFI Class 2. [ 128 ] [ 129 ] 32-bit UEFI was originally not supported since vendors did not have any interest in producing native 32-bit UEFI firmware because of the mainstream status of ...
Windows Vista includes a specialized QoS API called qWave (Quality Windows Audio/Video Experience), [7] which is a pre-configured quality of service module for time dependent multimedia data, such as audio or video streams. qWave uses different packet priority schemes for real-time flows (such as multimedia packets) and best-effort flows (such ...
By default, the necessary files are loaded into main memory, but using a feature called ReadyBoost, Windows Vista and Windows 7 can use alternative storage such as USB flash drives, thereby freeing up main memory. Although hard disks may have higher sequential data transfer rates, flash drives can be faster for small files or non-sequential I/O ...