2020-12-11 15:07:25 +01:00
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#!/bin/sh
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2021-01-08 11:02:41 +01:00
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# Mostly intended to be used to create a boot device with an USB key
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# Ask the device to use for EFI partition
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# Create partition label and new partition if not present
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# Format the partition
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# Create the mountpoint and mount the partition
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# Add an entry in /etc/fstab with systemd-automount
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# Install efibootmgr and efivar to be able to manage EFI entries
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2020-12-11 15:07:25 +01:00
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EFI_MOUNTPATH="/boot/efi"
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# Show a warning if not in a chroot (a rescue/chroot mode is mostly attempted)
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if ! ischroot; then
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printf "%s" "Take care, you are not in a chroot environment !\n"
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fi
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# Select the future EFI partition
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2021-01-08 11:02:41 +01:00
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printf "%b" "All data on the selected device will be deleted ! Be sure to know what you are doing !\n"
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printf "%b" "Select device and partition to use for UEFI Stub (eg. /dev/sdX1) :\n"
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2020-12-11 15:07:25 +01:00
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read -r EFI_PARTITION
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# Test if partition exists
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if [ ! -b "${EFI_PARTITION}" ]; then
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EFI_DEVICE=$(printf "%s" "${EFI_PARTITION}" | sed "s;\(/dev/...\).*;\1;")
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printf "%b\n" "${EFI_PARTITION} partition doesn't exist. Create it with parted."
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parted "${EFI_DEVICE}" mklabel gpt
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parted "${EFI_DEVICE}" mkpart primary 1049kB 1gB
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fi
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# Enable boot flag
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parted "${EFI_DEVICE}" set 1 boot on
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# Format in vfat
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mkfs.fat "${EFI_PARTITION}"
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# Create mountpoint if needed
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mkdir -p -- "${EFI_MOUNTPATH}"
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# And mount it if not already mounted
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mountpoint -q "${EFI_MOUNTPATH}" || mount -- "${EFI_PARTITION}" "${EFI_MOUNTPATH}"
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# Add EFI device automount in fstab
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EFI_UUID=$(blkid -s UUID -o value "${EFI_PARTITION}")
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printf "%b\n" "UUID=${EFI_UUID} ${EFI_MOUNTPATH} vfat defaults,x-systemd.automount,x-systemd.device-timeout=2,x-systemd.idle-timeout=1min,noatime,noauto 0 2" >> /etc/fstab
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# Install required packages
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aptitude install -y efibootmgr efivar
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# Copy kernel and initrd
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printf "%b\n" "Copy kernel and initramfs to EFI partition : ${EFI_MOUNTPATH}"
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mkdir -p -- "${EFI_MOUNTPATH}"/EFI/debian/
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cp /vmlinuz /initrd.img -- "${EFI_MOUNTPATH}"
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exit 0
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