Changed Features and New :
New features and functionality in Windows 8 include a faster startup through UEFI integration and the new "Hybrid Boot" mode (which hibernates the Windows kernel on shutdown to speed up the subsequent boot),a new lock screen with a clock and notifications,and the ability for enterprise users to create live USB versions of Windows (known as Windows To Go).Windows 8 also adds native support for USB 3.0 devices, which allow for faster data transfers and improved power management with compatible devices,along with support for near field communication to facilitate sharing and communication between devices.
Windows Explorer, which has been also renamed File Explorer, now includes a ribbon in place of the command bar. File operation dialogs have been updated to provide more detailed statistics, the ability to pause file transfers, and improvements in the ability to manage conflicts when copying files.A new "File History" function allows incremental revisions of files to be backed up to and restored from a secondary storage device,while Storage Spaces allows users to combine different sized hard disks into virtual drives and specify mirroring, parity, or no redundancy on a folder-by-folder basis.
Task Manager has also been redesigned, including a new processes tab with the option to display fewer or more details of running applications and background processes, a heat map using different colors indicating the level of resource usage, network and disk counters, grouping by process type (e.g. applications, background processes and Windows processes), friendly names for processes and a new option which allows to search the web to find information about obscure processes Additionally, the Blue Screen of Death has been updated with a simpler and modern design with less technical information displayed.
Removed Features :
Aside from the removal of the Start menu, several notable features have been removed from Windows 8. Support for playing DVDs has been removed from Windows Media Playerdue to the cost of licensing the necessary decoders (especially for devices which do not include optical disc drives at all) and the prevalence of streaming services such as Netflix. For the same reasons, Windows Media Center will no longer be included by default on Windows 8 as well, but the software (which also includes support for DVD playback) can be added back through the paid "Pro Pack" (for the base version of Windows 8, which also upgrades the system to Windows 8 Pro) or "Media Center Pack" (for Windows 8 Pro) add-ons. Windows 8 will still support third-party DVD playback software.
File History, the new backup feature of Windows 8 described above, replaces Backup and Restore, the former backup app, and Previous Versions, a component of Windows Explorer that saves previous versions of changed files. Backup and Restore is deprecated but will continue to work on preset schedule on computers that upgrade from Windows 7 to Windows 8.[80]:76 Previous Versions no longer protects local files, although it is still available to access previous versions of shared files stored on a Windows Server computer.[80]:74 Shadow Copy, the subsystem component based on which these worked, however, is still available for other software to use.[80]:74
Windows 8 also removed the ability to customize the font color as well as the color of maximize/minimize buttons in the title bar which renders it almost impossible to read the text and see the buttons - in case the user chooses a dark color for the Windows borders and taskbar.
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