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Full Discussion: HMC Upgrade Question
Operating Systems AIX HMC Upgrade Question Post 302740067 by acascianelli on Wednesday 5th of December 2012 12:52:31 PM
Old 12-05-2012
I just got off the phone with IBM support over this matter. It turns out that the HMC update I'm trying to do will work without re-IPL'ing my managed systems.

The only thing they warned me about was making sure that my managed systems were set to boot from the temporary firmware which was compatible with the newer versions of the HMC.
 

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BOOTCTL(1)							      bootctl								BOOTCTL(1)

NAME
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 https://www.freedesktop.org/wiki/Specifications/BootLoaderSpec 2. systemd boot loader interface https://www.freedesktop.org/wiki/Software/systemd/BootLoaderInterface systemd 237 BOOTCTL(1)
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