Problem in displaying message on RHEL6 on EFI during PXE boot

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Operating Systems Linux Problem in displaying message on RHEL6 on EFI during PXE boot
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Old 10-04-2013
Problem in displaying message on RHEL6 on EFI during PXE boot


I am doing PXE boot for RHEL6.4 on EFI and want to display custom messsage before loading vmlinuz and initrd.img, which is not working.

boot server side (In case of BIOS client):

In /var/lib/tftpboot/default file I am putting the message in below format:

SAY hello world

boot server side(In case of EFI client):

In /var/lib/tftpboot/efidefault file I am putting the message in below format:

SAY hello world

In case of BIOS client machine, message is being displayed successfully but in case of EFI it is not.

Please suggest any similar method for EFI as its very urgent.

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BOOTCTL(1)							      bootctl								BOOTCTL(1)

bootctl - Control the firmware and boot manager settings SYNOPSIS
bootctl [OPTIONS...] status bootctl [OPTIONS...] list bootctl [OPTIONS...] update bootctl [OPTIONS...] install bootctl [OPTIONS...] remove DESCRIPTION
bootctl checks, updates, installs or removes the boot loader from the current system. bootctl status checks and prints the currently installed versions of the boot loader binaries and all current EFI boot variables. bootctl list displays all configured boot loader entries. bootctl update updates all installed versions of systemd-boot, if the current version is newer than the version installed in the EFI system partition. This also includes the EFI default/fallback loader at /EFI/BOOT/BOOT*.EFI. A systemd-boot entry in the EFI boot variables is created if there is no current entry. The created entry will be added to the end of the boot order list. bootctl install installs systemd-boot into the EFI system partition. A copy of systemd-boot will be stored as the EFI default/fallback loader at /EFI/BOOT/BOOT*.EFI. A systemd-boot entry in the EFI boot variables is created and added to the top of the boot order list. bootctl remove removes all installed versions of systemd-boot from the EFI system partition, and removes systemd-boot from the EFI boot variables. If no command is passed, status is implied. OPTIONS
The following options are understood: -h, --help Print a short help text and exit. --version Print a short version string and exit. --path= Path to the EFI System Partition (ESP). If not specified, /efi, /boot, and /boot/efi are checked in turn. It is recommended to mount the ESP to /boot, if possible. -p, --print-path This option modifies the behaviour of status. Just print the path to the EFI System Partition (ESP) to standard output and exit. --no-variables Do not touch the EFI boot variables. EXIT STATUS
On success, 0 is returned, a non-zero failure code otherwise. SEE ALSO
Boot loader specification[1] systemd boot loader interface[2] NOTES
1. Boot loader specification 2. systemd boot loader interface systemd 237 BOOTCTL(1)

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