Windows 启动管理器：修订间差异

|introduced in = [[Windows Vista Build 5048]]

The feature was introduced in [[Windows Vista build 5048]] as a replacement for the gradually-aging <code>[[ntldr|NTLDR]]</code> application, which had been present since the initial release of [[Windows NT 3.1]]. In this early state, the background colors for the Advanced Boot Options menu and boot errors were respectively displayed with blue and red backgrounds; these background colors were removed in [[Windows Vista build 5098|build 5098]].此功能是在 Windows Vista Build 5048 中引入的，以替代自 Windows NT 3.1 的初始版本以来一直存在且逐渐老化的 NTLDR 应用程序。在此早期状态下，Advanced Boot Options（高级引导选项）菜单和引导错误的背景颜色分别以蓝色和红色背景显示；这些背景颜色在 Build 5098 中删除。

Initially using the same <code>boot.ini</code> as <code>NTLDR</code>, it transitioned in [[Windows Vista build 5259|build 5259]] to a Boot Configuration Data (BCD) database instead. Consequently, [[MSConfig]] was also repurposed to configure the BCD database. Despite this, the Windows Boot Manager was originally capable of falling back to using the <code>boot.ini</code> file when required. This can be seen by typing <code>NOBCD</code> under the <code>timeout=</code> parameter in <code>boot.ini</code> to skip BCD settings; the functionality was later removed in the [[Windows 10 Anniversary Update]]. <!-- todo: check -->

Support for booting under a 32-bit EFI environment was briefly implemented in build 5098, and was promptly removed after [[Windows Vista build 5219|build 5219 (winmain_idx02.050830-2010)]] due to a lack of interest from hardware manufacturers.<ref name="Beta1HWDep">Microsoft. [https://web.archive.org/web/20080117204037/http://support.microsoft.com/kb/930061 Unified Extended Firmware Interface support in Windows Vista], ''Microsoft Knowledge Base''. 26 October 2007.</ref> This feature would be later reintroduced in [[Windows 8 build 7850]].