We all know that Microsoft is working on its upcoming OS "
Windows 8" and currently a
Consumer Preview build (public
beta) is available free for download:
The
Release Preview build (
Release Candidate) is going to release in first week of
June.
Windows 8 comes with many new features and enhancements such as Start Screen, Ribbon UI, Win+X menu, etc. But the most impressive thing about Windows 8 is its booting time. According to Microsoft, Windows 8 will boot in less than 7 seconds.
In an official post at building Windows 8 blog, Microsoft posted about Windows 8
boot loader, its menus and useful options. Microsoft says that Windows 8 boots so quickly that you can't get time to press F8 or F2 keys to access advanced boot options such as boot into Safe Mode and other boot options such as:
- Boot using an alternate device such as USB, etc.
- Restore Windows to a working state
- Enable debugging option
- Disable driver signing option
To overcome this problem, Microsoft decided to put together all advanced boot options into a single menu which is now called "
Boot Options Menu". This new
boot menu has all the troubleshooting tools, the developer-focused options for Windows startup, methods for accessing the firmware's BIOS setup, and a straightforward method for booting to alternate devices such as USB drives.
If Windows 8 faces a problem in booting, this new boot options menu is automatically launched so that you can access advanced boot options.
Windows 8 new boot options menu looks like following image:

This new boot menu provides many useful options such as booting to an alternate device (such as a USB drive or network), reboot directly into the UEFI firmware's BIOS setup, boot into another installed OS, etc.

This boot options menu also allows you to access other advanced boot options using a separate section called "
Troubleshoot" which helps you in refreshing, resetting Windows 8 to factory settings, accessing
Command Prompt and changing Windows startup settings.
The new "
Windows startup settings" option includes items such as "disable driver signing" and "debugging mode" as well as Safe Mode and several other options as shown in following screenshot:

To access Boot Options menu, you can boot into Windows 8 and then select
Advanced startup option on the
General tab of
PC settings. You can get to
PC settings from the Settings charm, or by searching from the Start screen. On the General tab, you'll see a short description of the options that will be available in the boot options menu, as well as a
Restart now button.
For even quicker access, there's another way of reaching the boot options menu: from within the shutdown menu. If you hold down the
Shift key while clicking
Restart, Windows 8 will go through the same sequence of events as if you had clicked
Advanced startup from within
PC settings.
There's one other way to trigger the boot options menu during shutdown, and this way has the added bonus of working from Command Prompt. Windows 8 comes with a new flag to shutdown.exe:
/o. The /o flag only works in conjunction with /r (for restart), so the full syntax is:
Shutdown.exe /r /o
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