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Full Discussion: EFI on BSDs problem
Special Forums Hardware Boot Loaders EFI on BSDs problem Post 302462936 by fpmurphy on Friday 15th of October 2010 10:19:48 AM
Old 10-15-2010
EFI loader only supports IA64 currently on FreeBSD. According to the FreeBSD Status report Q1/2010, work on supporting EFI booting on FreeBSD/i386 resumed. The boot loader can now read an ELF file from the EFI FAT partition and they are now working on trying to boot a kernel.

It would seem that what you want to do is not supported OOTB at present.
 

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efi_ls(1M)																efi_ls(1M)

NAME
efi_ls - list EFI file information or contents of an EFI directory SYNOPSIS
devicefile] [path] DESCRIPTION
lists file information or contents of an EFI directory. The EFI file system is based on the FAT file system and used by the Itanium-based system BIOS to locate an HP-UX bootloader. See efi(4). lists filenames, last modified dates, and file sizes. devicefile should be a device file for an EFI volume. Given a path, determines whether the path is a file or a directory. For a file, lists the file by itself. For a directory, lists the contents of the directory. If no path is given, lists the root directory for EFI volume. A path should be relative to the root of the EFI volume specified by device- file, not to an HP-UX file system. Options recognizes the following option: devicefile is the device special file of the EFI file system to be listed. Without the option, uses the device file specified in the environment variable if it is defined. The option overrides the environment variable. RETURN VALUE
returns exit code 0 on success. Otherwise it prints a diagnostic message and returns nonzero. 0 Successful completion. >0 Error condition occurred. EXAMPLES
List a root directory of device file which contains an EFI file system: List a root directory of the persistent device file (see intro(7)), which contains an EFI file system: List the contents of directory of device file which contains an EFI file system: List information about the file of device file which contains an EFI file system: AUTHOR
was developed by HP. SEE ALSO
efi_cp(1M), efi_fsinit(1M), efi_mkdir(1M), efi_rmdir(1M), efi_rm(1M), efi(4), intro(7). Itanium(R)-based Systems Only efi_ls(1M)
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