Operating System Boot and Shutdown
Booting the Microsoft Windows Operating System
Appendix A
187
Booting the Microsoft Windows Operating System
You can boot the Windows Server 2003 operating system on an HP Integrity server by using the EFI Boot
Manager to select the appropriate Windows item from the boot options list.
See “Shutting Down Microsoft Windows” on page 195 for details on shutting down the Windows operating
system.
CAUTION ACPI Configuration for Windows Must Be “windows”
On nPartition-capable HP Integrity servers, to boot the Windows operating system an
nPartition must have its ACPI configuration value set to windows.
At the EFI Shell, enter the acpiconfig command with no arguments to list the current ACPI
configuration. If the acpiconfig value is not set to windows, then Windows cannot boot; in this
situation you must reconfigure acpiconfig or else booting will be interrupted with a panic
when launching Windows.
To set the ACPI configuration for Windows: at the EFI Shell enter the acpiconfig windows
command, and then enter the reset command for the nPartition to reboot with the proper
(windows) configuration for Windows.
NOTE Microsoft Windows Booting on HP Integrity Servers
The recommended method for booting Windows is to use the EFI Boot Manager menu to select
a Windows entry from the boot options list. Using the ia64ldr.efi Windows loader from the
EFI Shell is not recommended.
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