mirror of
https://github.com/t2linux/wiki.git
synced 2026-04-30 13:32:14 -07:00
Raymond Berger
90 lines
2.0 KiB
Bash
Executable File
90 lines
2.0 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Copyright (c) 2022 Aditya Garg
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set -euo pipefail
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if [[ `uname -s` != "Linux" ]] ; then
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echo "This script is intended to be run from Linux. Aborting!"
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exit 1
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fi
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if [[ ${1-default} == default ]] ; then
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echo "Please specify the name of the new EFI partition. Aborting!"
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exit 1
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fi
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if [ $USER != root ]
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then
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echo "This script is intended to be run as root. You will be asked for your password."
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sudo chmod 755 $0
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sudo $0 "$1"
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exit 0
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fi
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echo "Are you sure you want to change your EFI partition to \""$1"\"? (y/N)"
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read input
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if [[ ($input != y) && ($input != Y) ]]
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then
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echo "Abort!"
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exit 1
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fi
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echo "Changing the EFI partition."
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# Mount the new partition to /tmp/newefi
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mkdir /tmp/newefi
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MOUNTPOINT=$(lsblk -o label,mountpoints | grep -w "$1" | cut -d "/" -f 2-)
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OLDUUID=$(lsblk -o mountpoints,uuid | grep -w "/boot/efi" | xargs | cut -d " " -f 2)
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NEWUUID=$(lsblk -o uuid,label | grep -w "$1" | xargs | cut -d " " -f 1)
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FSTABUUID=$(cat /etc/fstab | grep "${OLDUUID}" | cut -d "=" -f 2 | cut -c 1-9)
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if [[ ${OLDUUID} != ${FSTABUUID} ]]
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then
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echo "Old EFI partition not found in /etc/fstab. Abort!"
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exit 1
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fi
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umount "${MOUNTPOINT}" 2>/dev/null || true
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mount UUID="${NEWUUID}" /tmp/newefi
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# Copy files
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echo "Copying Bootloader to new EFI partition."
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cp -r /boot/efi/EFI /tmp/newefi
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for folder in "/tmp/newefi/EFI/APPLE" \
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"/tmp/newefi/EFI/Microsoft"
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do
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if [[ -d "$folder" ]]
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then
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rm -r "$folder"
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fi
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done
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# Remove Linux from old EFI
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echo "Removing Bootloader from old EFI partition."
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cd /boot/efi/EFI
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shopt -s extglob
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rm -r !("APPLE"|"Microsoft")
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cd - > /dev/null
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if [[ -f /boot/efi/EFI/Microsoft/Boot/bootmgfw.efi ]]
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then
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echo "Windows installation detected. Restoring Windows Bootloader."
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mkdir /boot/efi/EFI/Boot
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cp /boot/efi/EFI/Microsoft/Boot/bootmgfw.efi /boot/efi/EFI/Boot/bootx64.efi
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fi
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# Update fstab
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echo "Updating /etc/fstab."
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sed -i "s/${OLDUUID}/${NEWUUID}/g" /etc/fstab
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# Mount new EFI
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echo "Mounting the new EFI partition."
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umount /tmp/newefi
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umount /boot/efi
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rm -r /tmp/newefi
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mount -a
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echo "Success!"
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