Windows 8 is the codename for the next version of the Microsoft Windows computer operating system following Windows 7. It has many changes from previous versions. In particular it adds support for ARM microprocessors in addition to the previously supported x86 microprocessors from Intel and AMD. A new Start Screen interface has been added that was designed for touchscreen input in addition to mouse, keyboard, and pen input. It is said to be released sometime around 2012. Microsoft has yet to announce the release date.
Early announcements
In January 2011, at the Consumer Electronics Show (CES), Microsoft announced that Windows 8 would be adding support for ARM microprocessors in addition to the x86microprocessors from Intel and AMD.
Milestone leaks
A 32-bit Milestone 1 build, build 7850, with a build date of September 22, 2010, was leaked to BetaArchive, an online beta community, which was soon leaked to P2P/torrent sharing networks on April 12, 2011. Milestone 1 includes a ribboninterface for Windows Explorer, a PDF reader called Modern Reader, an updated task manager called Modern Task Manager, and nativeISO image mounting.
A 32-bit Milestone 2 build, build 7927, was leaked to The Pirate Bay on August 29, 2011 right after many pictures leaked on BetaArchive the day before.Features of this build are mostly the same as build 7955.
A 32-bit Milestone 2 build, build 7955, was leaked to BetaArchive on April 25, 2011.Features of this build included a new pattern login and a new file system known as Protogon.
A 64-bit Milestone 3 build, build 7959, was leaked to BetaArchive on May 1, 2011. This build is notable for being the first publicly leaked Windows Server 8 build, as well as the first leaked 64-bit build.
A Milestone 3 build, build 7971, was released to close partners of Microsoft on March 29, 2011 but was kept under heavy security. However, a few screenshots were leaked. The "Windows 7 Basic" theme now uses similar metrics to the Aero style, but maintains its non-hardware accelerated design, and also supports taskbar thumbnails. The boxes that encase the "close, maximize, and minimize" buttons have been removed, leaving just the signs.
A 64-bit Milestone 3 build, build 7989, leaked to BetaArchive on June 18, 2011 after screenshots were revealed the previous day. An SMS feature, a new virtual keyboard, a new bootscreen, transparency in the basic theme, geo-location services, Hyper-V 3.0, and PowerShell 3.0 were revealed in this build.
New features
Windows 8 will contain a new user interface based on Microsoft's design language named Metro. With the new change, the Start Menu was replaced in favor for the new Start Screen, where there are tiles that contain shortcuts to applications, Metro style applications, and updating tiles, similar to Program Manager and Windows Phone.
A new authentication method allows users to sketch in three different places over the picture to login, instead of typing a password.
Windows Explorer now uses a ribbon interface, similar to those used in Microsoft Office applications.
Another feature expected to be introduced in Windows 8 is native USB 3.0 support, without the need to load drivers.
Windows 8 will come with Windows Store, an online marketplace for buying, selling, and advertising applications.
Windows 8 can be run from a USB-connected drive, such as a flash drive. This feature is called Windows To Go. It is intended for enterprise administrators to provide users with a Windows 8 image that reflects the corporate desktop; pricing and licensing details were not discussed when the feature was announced. WTG is not included in Windows 8 previews.
Windows 8 will support multiple monitors with the new ability to natively display different background images on each display and customized taskbar(s) on each of the connected displays.
The Developer Preview comes with two new recovery functions. Refresh and Reset, which both make a complete restore easier than a re-installation. The former keeps all the settings and files of the user intact and only reverses all changes to Windows files to its original state while removing all installed programs and apps. The latter deletes all files and effectively re-installs Windows, but without any additional user input such as agreeing to license agreements or selecting a hard disk required. After a reset completes, the user will be asked for the product key and will then proceed to account creation.
One big change is that user accounts do not have to be local-only (or from an Active Directory domain) anymore but can be linked up to one's Windows Live ID. This has the advantage that users will not lose their settings and files as they move from their home computer to their work laptop or to any other computer also using Windows 8.
Other new features include a new Welcome screen,a new packaged application model called AppX that is based on Silverlight, andOpen Packaging Conventions as well as a setting to automatically adjust window color to fit the wallpaper.
There is also a stripped down "Immersive" version of Internet Explorer, using the similar Metro-based user interface of the mobile version of Internet Explorer 9. The Immersive Version of Internet Explorer 10 does not support ActiveX plugins, in order to be an HTML5-only browser. The Desktop version of IE10 does support ActiveX plugins.
A new "Hybrid Boot" option that uses "advanced hibernation functionality" on shutdown to allow faster startup times.
A new version of Task Manager with a redesigned user interface is also present in pre-release versions of Windows 8.
The text on the title bar of a dialog box or a program's window is centered
Hardware requirements
Microsoft say that the Windows Developer Preview (a pre-release version of Windows 8) works well on hardware suitable for Windows Vista or7.
| Architecture | IA-32 (32-bit) | x86-64 (64-bit) |
|---|---|---|
| Processor | 1 GHz | |
| Memory (RAM) | 1 GB | 2 GB |
| Graphics Card | DirectX 9 graphics device with WDDM 1.0 or higher driver | |
| HDD free space | 16 GB | 20 GB |
A multi-touch screen is required to use touch input. For Metro applications, a screen resolution of 1024x768 or higher is required.
Microsoft has revealed the following maximum supported hardware specifications for Windows Server 8 at the BUILD conference.
| Logical processors | 640 (was 256 in Windows Server 2008 R2) |
|---|---|
| Random-access memory | 4 TB (was 2 TB in Windows Server 2008 R2) |
| Failover cluster nodes | 63 (was 16 in Windows Server 2008 R2) |
Microsoft may also require new PCs to have the UEFI secure boot feature enabled by default to be given Windows 8 certification. There has been some concern that it could lead to machines that do not support alternative operating systems.Microsoft has addressed the issue in a blog post, stating that the manufacturer is free to choose which signatures are accepted by the feature and that the manufacturer is also free to offer the ability to turn off the secure boot feature.
Source : wikipedia
i will try it,
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