我的群晖是安装在星际蜗牛C款上的，引导镜像安装在SSD上，要修改引导相关的文件就要先进入群晖系统，然后把引导盘即SSD mount到群晖系统中才能修改引导盘中的引导配置文件。
进入群晖系统以后，打开SSH，然后在windows中启动命令行工具。
输入： SSH 用户名@IP地址
sudo -i
输入用户名的密码，进入群晖系统。
mkdir -p /tmp/grub
cd /dev
mount -t vfat synoboot1 /tmp/grub/
cd /tmp/grub/boot/grub
vi grub.cfg
insmod search
insmod echo
insmod terminal
insmod test
insmod font
insmod loadenv
insmod serial
insmod usb_keyboard
insmod linux
insmod gzio
insmod fat
insmod ext2
set default="boot"
set timeout=15
set timeout_style=menu
set vesa_mode=1
if [ -s $prefix/grubenv ]; then
load_env
fi
if [ "${next_entry}" ]; then
set default="${next_entry}"
unset next_entry
save_env next_entry
fi
if [ "${vesa_mode}" ]; then
set vesa_mode=${vesa_mode}
fi
function load_video {
if [ x$feature_all_video_module = xy ]; then
insmod all_video
else
insmod efi_gop
insmod efi_uga
insmod ieee1275_fb
insmod vbe
insmod vga
insmod video_bochs
insmod video_cirrus
fi
}
load_video
if loadfont unicode; then
set gfxmode=auto
insmod gfxterm
terminal_output gfxterm
fi
set menu_color_normal=light-cyan/dark-gray
set menu_color_highlight=black/cyan
if serial --unit=0 --speed=115200; then
terminal_input --append serial_com0
terminal_output --append serial_com0
fi
function set_gfxpayload {
if [ ${vesa_mode} -eq 1 ]; then
set gfxpayload=keep
else
set gfxpayload=text
fi
}
set RR_CMDLINE="console=tty2 root=/dev/ram net.ifnames=0"
search --set=root --label "RR3"
if [ -s /zImage-dsm -a -s /initrd-dsm ]; then
if [ "${default}" = "direct" ]; then
set timeout="1"
menuentry 'Boot DSM kernel directly' --id direct {
set_gfxpayload
echo "cmdline:"
echo "${dsm_cmdline}"
echo "Loading DSM kernel..."
linux /zImage-dsm ${dsm_cmdline}
echo "Loading DSM initramfs..."
initrd /initrd-dsm
echo "Booting..."
echo "Access http://find.synology.com/ to connect the DSM via web."
}
fi
menuentry 'Boot DSM' --id boot {
set_gfxpayload
echo "Loading kernel..."
linux /bzImage-rr ${RR_CMDLINE}
echo "Loading initramfs..."
initrd /initrd-rr
echo "Booting..."
}
menuentry 'Boot Recovery' --id recovery {
set_gfxpayload
echo "Loading kernel..."
linux /bzImage-rr ${RR_CMDLINE} recovery
echo "Loading initramfs..."
initrd /initrd-rr
echo "Booting..."
}
menuentry 'Force re-install DSM' --id junior {
set_gfxpayload
echo "Loading kernel..."
linux /bzImage-rr ${RR_CMDLINE} force_junior
echo "Loading initramfs..."
initrd /initrd-rr
echo "Booting..."
}
fi
menuentry 'Configure loader' --id config {
set_gfxpayload
echo "Loading kernel..."
linux /bzImage-rr ${RR_CMDLINE} IWANTTOCHANGETHECONFIG
echo "Loading initramfs..."
initrd /initrd-rr
echo "Booting..."
}
if [ ${vesa_mode} = 1 ]; then
menuentry 'Change vesa to text video mode' --id videomode {
set vesa_mode=0
save_env vesa_mode
configfile ${prefix}/grub.cfg
}
else
menuentry 'Change text to vesa video mode' --id videomode {
set vesa_mode=1
save_env vesa_mode
reboot
configfile ${prefix}/grub.cfg
}
fi
修改完以后，保存修改，重启。
进入系统后，等待一会。系统更新后就可以进入群晖系统了。
