How to update multiple EFI system partitions on several disks?

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http://askubuntu.com – I have three identical disks with identical partitioning using the GPT partition table format: # sudo parted /dev/sda p Model: ATA WDC WD30EZRX-00M (scsi) Disk /dev/sda: 3001GB Sector size (logical/physical): 512B/4096B Partition Table: gpt Number Start End Size File system Name Flags 1 1049kB 537MB 536MB fat32 EFI System Partition boot 2 537MB 1611MB 1074MB raid1boot raid 3 1611MB 3001GB 2999GB primary raid The partitions holds: Files needed by UEFI for booting. Grub's s (HowTos)