point to the file to be loaded. These variables contain application-specific data that is passed directly to the EFI application. EFI variables provides system firmware with a boot menu that points to all the operating systems, even multiple versions of the same operating system.
The EFI Boot Manager enables you to control the server boot environment. Depending on boot option configuration after the server is powered up, the Boot Manager presents you with different ways to bring up the system. For example, you can boot to the EFI Shell, to an operating system located on the network or residing on media in the server, or to the EFI Boot Maintenance menu.
The following options are available in the EFI Boot Manager menu:
•Boot from a File—Automatically adds EFI applications as boot options or enables you to boot from a specific file. When you select this option, the system searches for an EFI directory. If the EFI directory is found, then it looks in each of the subdirectories below EFI. In each of those subdirectories, it looks for the first file that is an executable EFI application. Each of the EFI applications that meet this criterion can be automatically added as a boot option. In addition, legacy boot options for A: and C: are also added if those devices are present.
You can also launch a specific application without adding it as a boot option. In this case, the EFI Boot Manager searches the root directories and the \EFI\TOOLS directories of all of the EFI system partitions present in the system for the specified EFI application.
•Add a Boot Option—Adds a boot option to the EFI Boot Manager. Specify the boot option by providing the name of the EFI application. Along with the name, you can also provide either ASCII or UNICODE arguments the file uses. Given the EFI application name and any options, the EFI Boot Manager searches for the executable file in the same directories as described in the Boot from a File option. When the file is found, it is executed.
•Delete Boot Options—Deletes a specific boot option or all boot options.
•Change Boot Order—Controls the relative order in which the EFI Boot Manager attempts to execute boot options. For help on the control key sequences you need for this option, see the help menu.
•Manage BootNext Setting—Selects a boot option to use only once (the next boot operation).
•Set Automatic Boot Timeout—Defines the value in seconds before the system automatically boots without user intervention. Set this value to zero to disable the timeout feature.
•Exit—Returns control to the EFI Boot Manager menu. This displays the active boot devices, including a possible integrated shell (if the implementation is so constructed).
For more information, see “Using the Boot Option Maintenance Menu” (page 343).
EFI Commands
Table D-1lists EFI commands for the server.
Table D-1 EFI Commands
EFI Shell Command | BCH Command | BCH Command Parameters (PA-RISC) | Definition |
| Equivalent | | |
| (PA-RISC) | | |
| | | |
These commands are found in all other menus | |
| | | |
info boot | Boot | [PRI HAA ALT <path>] | Boot from specified path |
| | | |
help <command> | HElp | [<menu> <command>] | Display help for specified |
| | | command or menu |
| | | |
reset | RESET | | Reset the server (to allow |
| | | reconfiguration of complex |
| | | |
exit (at EFI Shell) | MAin | | Return to the main menu |
| | | |
MAin | | | |
| | | |
EFI Boot Manager | PAth | [PRI HAA ALT CON KEY <path>] | Display or modify a path |
“change boot order” | | | |
| | | |
