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Table 29-3 lists the values (in decimal) for the Start entry. Boot drivers (those with a Start value of 0) and file system drivers are always loaded regardless of their Start value because they are required to start Windows XP Professional.

Table 29-3 0 1 2 3 4

Figure 6-21. You can select alternative Internet programs for each of the six categories listed under Internet Programs.

Value Descriptions for Start Entries Specifies a driver that is loaded (but not started) by firmware calls made by Ntldr. If no errors occur, the kernel starts the driver. Specifies a driver that loads at kernel initialization during the startup sequence by calling Windows XP Professional boot drivers. Specifies a driver or service that is initialized at system startup by Session Manager (Smss.exe) or Service Controller (Services.exe). Specifies a driver or service that is manually started by a user, a process, or another service. Specifies a disabled (not started) driver or service.

Value Descriptions for Type Entries Specifies a kernel device driver Specifies a file system driver (also a kernel device driver) Specifies parameters passed to the device driver Specifies a service that obeys the service control protocol, can run in a process by itself, and can be started by the Services Controller Specifies a service that can share a process with other services

Some drivers and services require that certain dependencies be met before they start. You can find dependencies listed under the DependOnGroup and DependOnService entries in the HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\ Services\servicename subkey for each service or driver. For more information about using dependencies to prevent or delay a driver or service from starting, see Temporarily Disabling Services later in this chapter. The Services subkey also contains information that affects how drivers and services are loaded, a few of which are listed in Table 29-5.

Choose Your Default Internet Browser Two obscure settings are also found on the Programs tab. If you ve made a number of changes to your Internet Explorer home and search pages, you can reset them to the default settings by clicking the Reset Web Settings button at the bottom of the Programs tab. Also, are you tired of Internet Explorer always asking you if it should be your default browser This can happen if you install another browser after installing Windows XP, and it becomes the default. The next time you open Internet Explorer, you ll be told it s not the default browser, and you ll be asked if you want to make it the default. If you want to use the other browser by default and not see this message every time you choose to start a session with Internet Explorer, clear the check box on the Programs tab labeled Internet Explorer Should Check To See Whether It Is The Default Browser. On the other hand, if you want to reestablish Internet Explorer as your default browser, click the Reset Web Settings button on the Programs tab.

Part V:

With C++ you can develop procedural applications, pure objectoriented applications, or a mix of both.

Description At least one item from this group must start before this service is loaded. The subkey SYSTEM\CurrentControlSet\Control\ServiceGroupOrder contains the service group load order. Lists the specific services that must load before this service loads. Describes the component. Specifies the display name of the component. Controls whether a driver error requires the system to use the LastKnownGood control set or to display a Stop message.

If the value is 0x0 (Ignore, no error is reported), do not display a warning and proceed with startup. If the value is 0x1 (Normal, error reported), record the event to the System Event Log and display a warning message, but proceed with startup. If the value is 0x2 (Severe), record the event to the System Event Log, use the LastKnownGood settings, restart the system, and proceed with startup. If the value is 0x3 (Critical), record the event to the System Event Log, use the LastKnownGood settings, and restart the system. If the LastKnownGood settings are already in use, display a Stop message.

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