systemd-boot原名gummiboot，是一个UEFI的启动引导器（仅支持UEFI）
在ArchLinux上已包含在systemd包内，只需要以下步骤即可启用
使用之前请确保esp分区挂载到/boot，systemd-boot不支持从根分区加载内核
检查/boot：
# mount|grep /boot
/dev/nvme0n1p1 on /boot type vfat (rw,noatime)将systemd-boot安装到ESP
# bootctl install
Created "/boot/EFI".
Created "/boot/EFI/systemd".
Created "/boot/EFI/BOOT".
Created "/boot/loader".
Created "/boot/loader/entries".
Created "/boot/EFI/Linux".
Copied "/usr/lib/systemd/boot/efi/systemd-bootx64.efi" to "/boot/EFI/systemd/systemd-bootx64.efi".
Copied "/usr/lib/systemd/boot/efi/systemd-bootx64.efi" to "/boot/EFI/BOOT/BOOTX64.EFI".
Random seed file /boot/loader/random-seed successfully written (512 bytes).
Not installing system token, since we are running in a virtualized environment.
Created EFI boot entry "Linux Boot Manager".查看根分区
# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS
nvme0n1 259:0 0 20G 0 disk
├─nvme0n1p1 259:1 0 200M 0 part /boot
└─nvme0n1p1 259:2 0 19.8G 0 part /查看根分区的PARTUUID
# blkid /dev/nvme0n1p2
/dev/nvme0n1p2: UUID="5aee4e6f-3a67-4fa4-9cf8-9d7c857671c7" BLOCK_SIZE="4096" TYPE="ext4" PARTUUID="25e4ce44-cccd-9a4f-9e40-e74cf8e517a9"复制配置文件模板
cp /usr/share/systemd/bootctl/arch.conf /boot/loader/entries/针对内核编写配置
nano /boot/loader/entries/arch.conf文件内容：
## This is just an example config file.
## Please edit the paths and kernel parameters according to your system.
title Arch Linux
linux /vmlinuz-linux
initrd /initramfs-linux.img
options root=PARTUUID=XXXX rootfstype=XXXX add_efi_memmap将PARTUUID的值和rootfstype的值替换成实际的值
修改后：
## This is just an example config file.
## Please edit the paths and kernel parameters according to your system.
title Arch Linux
linux /vmlinuz-linux
initrd /initramfs-linux.img
options root=PARTUUID=25e4ce44-cccd-9a4f-9e40-e74cf8e517a9 rootfstype=ext4 add_efi_memmap如果有安装CPU微码的包，则添加到对应的位置。如：
## This is just an example config file.
## Please edit the paths and kernel parameters according to your system.
title Arch Linux
linux /vmlinuz-linux
initrd /intel-ucode.img
initrd /initramfs-linux.img
options root=PARTUUID=25e4ce44-cccd-9a4f-9e40-e74cf8e517a9 rootfstype=ext4 add_efi_memmap现在保存退出后，重启即可使用systemd-boot