diff --git a/README.md b/README.md
index 78699fb..36d9c25 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,12 @@
-# reinstall
\ No newline at end of file
+# reinstall
+Usage: 
+```
+curl -O https://raw.githubusercontent.com/bin456789/reinstall/main/reinstall.sh
+bash reinstall.sh centos-7/8/9 alma-8/9 rocky-8/9 fedora-36/37/38 ubuntu-20.04/22.04
+reboot
+```
+Username: `root`
+
+
+Password: `1`
+
diff --git a/ks-trans.cfg b/ks-trans.cfg
new file mode 100644
index 0000000..e687878
--- /dev/null
+++ b/ks-trans.cfg
@@ -0,0 +1,163 @@
+# shellcheck disable=SC2148
+rescue --nomount
+%pre
+
+exec >/dev/pts/0 2>&1
+
+download() {
+    if command -v axel; then
+        [ -z $2 ] && save="" || save="-o $2"
+        axel $1 $save
+    else
+        [ -z $2 ] && save="-O" || save="-o $2"
+        curl -L $1 $save
+    fi
+}
+
+update_part() {
+    partprobe
+    partx -u $1
+    udevadm settle
+}
+
+# 找到主硬盘
+xda=$(lsblk -dn -o NAME | grep -E 'nvme0n1|.da')
+
+# 反激活 lvm
+vgchange -an
+
+# 移除 lsblk 显示的分区
+partx -d /dev/$xda
+
+disk_size=$(blockdev --getsize64 /dev/$xda)
+disk_2t=$((2 * 1024 * 1024 * 1024 * 1024))
+
+# 对于红帽系是临时分区表，安装时除了 installer 分区，其他分区会重建为默认的大小
+# 对于ubuntu是最终分区表，因为 ubuntu 的安装器不能调整个别分区，只能重建整个分区表
+# {xda}*1 星号用于 nvme0n1p1 的字母 p
+if [ -d /sys/firmware/efi ]; then
+    # efi
+    parted /dev/$xda -s -- \
+        mklabel gpt \
+        mkpart '" "' fat32 1MiB 1025MiB \
+        mkpart '" "' ext4 1025MiB -2GiB \
+        mkpart '" "' ext4 -2GiB 100% \
+        set 1 boot on
+    update_part /dev/$xda
+    mkfs.fat -F 32 -n efi /dev/${xda}*1  #1 efi
+    mkfs.ext4 -L os /dev/${xda}*2        #2 os
+    mkfs.ext4 -L installer /dev/${xda}*3 #3 installer
+elif [ "$disk_size" -ge "$disk_2t" ]; then
+    # bios 2t
+    parted /dev/$xda -s -- \
+        mklabel gpt \
+        mkpart '" "' ext4 1MiB 2MiB \
+        mkpart '" "' ext4 2MiB -2GiB \
+        mkpart '" "' ext4 -2GiB 100% \
+        set 1 bios_grub on
+    update_part /dev/$xda
+    echo                                 #1 bios_boot
+    mkfs.ext4 -L os /dev/${xda}*2        #2 os
+    mkfs.ext4 -L installer /dev/${xda}*3 #3 installer
+else
+    # bios
+    parted /dev/$xda -s -- \
+        mklabel msdos \
+        mkpart primary ext4 1MiB -2GiB \
+        mkpart primary ext4 -2GiB 100% \
+        set 1 boot on
+    update_part /dev/$xda
+    mkfs.ext4 -L os /dev/${xda}*1        #1 os
+    mkfs.ext4 -L installer /dev/${xda}*2 #2 installer
+fi
+
+# 挂载主分区
+mkdir -p /os
+mount /dev/disk/by-label/os /os
+
+# 挂载其他分区
+mkdir -p /os/boot/efi
+mount /dev/disk/by-label/efi /os/boot/efi
+mkdir -p /os/installer
+mount /dev/disk/by-label/installer /os/installer
+
+# 安装 grub2
+basearch=$(uname -m)
+if [ -d /sys/firmware/efi ]; then
+    # shellcheck disable=SC2164
+    cd /os/boot/efi
+    download https://mirrors.aliyun.com/fedora/releases/38/Everything/$basearch/os/images/efiboot.img
+    mkdir /efiboot
+    mount -o ro efiboot.img /efiboot
+    cp -r /efiboot/* /os/boot/efi/
+else
+    rpm -i --nodeps https://mirrors.aliyun.com/centos/7/os/x86_64/Packages/grub2-pc-modules-2.02-0.86.el7.centos.noarch.rpm
+    grub2-install --boot-directory=/os/boot /dev/$xda
+fi
+
+# 安装 axel
+# rpm -i --nodeps https://mirrors.aliyun.com/epel/7/$basearch/Packages/a/axel-2.4-9.el7.$basearch.rpm
+
+# axel 有问题
+# axel "https://rocky-linux-us-south1.production.gcp.mirrors.ctrliq.cloud/pub/rocky//8.7/BaseOS/aarch64/os/images/pxeboot/vmlinuz"
+# Initializing download: https://rocky-linux-us-south1.production.gcp.mirrors.ctrliq.cloud/pub/rocky//8.7/BaseOS/aarch64/os/images/pxeboot/vmlinuz
+# Connection gone.
+
+# axel https://fedorapeople.org/groups/virt/virtio-win/direct-downloads/archive-virtio/virtio-win-0.1.229-1/virtio-win-0.1.229.iso
+# Initializing download: https://fedorapeople.org/groups/virt/virtio-win/direct-downloads/archive-virtio/virtio-win-0.1.229-1/virtio-win-0.1.229.iso
+# Too many redirects.
+
+if [ -d /sys/firmware/efi ] && [ "$basearch" = "x86_64" ]; then
+    action='efi'
+fi
+
+# 提取 finalos 到变量
+eval "$(grep -o '\bfinalos\.[^ ]*' /proc/cmdline | sed 's/finalos.//')"
+
+# 重新整理 extra，因为grub会处理掉引号，要重新添加引号
+for var in $(grep -o '\bextra\.[^ ]*' /proc/cmdline | xargs); do
+    extra_cmdline+=" $(echo $var | sed -E "s/(extra\.[^=]*)=(.*)/\1='\2'/")"
+done
+
+if [ -d /sys/firmware/efi ]; then
+    grub_cfg=/os/boot/efi/EFI/BOOT/grub.cfg
+else
+    grub_cfg=/os/boot/grub2/grub.cfg
+fi
+
+# shellcheck disable=SC2154,SC2164
+if [ "$distro" = "ubuntu" ]; then
+    cd /os/installer/
+    download $iso ubuntu.iso
+
+    iso_file=/ubuntu.iso
+    # 正常写法应该是 ds="nocloud-net;s=https://xxx/" 但是甲骨文云的ds更优先，自己的ds根本无访问记录
+    # $seed 是 https://xxx/
+    cat <<EOF >$grub_cfg
+        set timeout=5
+        menuentry "reinstall" {
+            search --no-floppy --label --set=root installer
+            loopback loop $iso_file
+            linux (loop)/casper/vmlinuz iso-scan/filename=$iso_file autoinstall cloud-config-url=$ks $extra_cmdline ---
+            initrd (loop)/casper/initrd
+        }
+EOF
+else
+    cd /os/
+    download $vmlinuz
+    download $initrd
+
+    cd /os/installer/
+    download $squashfs install.img
+
+    cat <<EOF >$grub_cfg
+        set timeout=5
+        menuentry "reinstall" {
+            search --no-floppy --label --set=root os
+            linux$action /vmlinuz inst.stage2=hd:LABEL=installer:/install.img inst.ks=$ks $extra_cmdline
+            initrd$action /initrd.img
+        }
+EOF
+fi
+reboot
+%end
diff --git a/ks.cfg b/ks.cfg
new file mode 100644
index 0000000..b234580
--- /dev/null
+++ b/ks.cfg
@@ -0,0 +1,127 @@
+# shellcheck disable=2148,2215
+# 设置
+keyboard --vckeymap=us --xlayouts='us'
+lang en_US.UTF-8
+timezone Asia/Shanghai --utc
+rootpw --plaintext 1
+text
+reboot
+%include /tmp/include-url-command
+
+# 分区
+ignoredisk --only-use="hda|sda|vda|nvme0n1"
+bootloader # 甲骨文x86输出到控制台添加 --append="console=ttyS0,9600"
+clearpart --all --initlabel
+reqpart                     # 如果需要，自动创建 efi 或 biosboot 分区
+part / --fstype=ext4 --grow # 不用 xfs 因为不能缩小容量
+
+# 软件
+%packages --ignoremissing # el9 minimal.iso fedora Server repo/iso 没有 tuned
+@^Minimal Install
+tuned
+%include /tmp/include-packages-for-resize
+
+# 不删除usb相关的包，因为甲骨文云有usb设备，作用未知
+# -usb_modeswitch
+# -usbutils
+
+# 无线
+-iw
+-crda
+-rfkill
+# shellcheck disable=2211
+-iwl*-firmware
+
+# 虚拟机用不上
+-irqbalance # 多核+直通设备可能有用？
+-microcode_ctl
+-smartmontools
+-aic94xx-firmware
+-alsa-firmware
+-ivtv-firmware
+# -linux-firmware # 去除后安装centos 8会报错
+
+%end
+
+# 禁用防火墙
+# firewall --disabled
+
+# 禁用 selinux
+selinux --disabled
+
+# 禁用 kdump
+%addon com_redhat_kdump --disable
+%end
+
+##############################################
+%pre
+touch /tmp/include-packages-for-resize
+# 有 installer 分区，表示用了两步安装
+if [ -e /dev/disk/by-label/installer ]; then
+    # 1g内存下，安装器默认开启了zram ，但安装f38还是不够内存，所以还要开启swap
+    mkdir /installer
+    mount /dev/disk/by-label/installer /installer
+    mount /dev/disk/by-label/installer /installer -o remount,rw
+    swapfile=/installer/swapfile
+    if -v fallocate; then
+        fallocate -l 1GiB $swapfile
+    else
+        dd if=/dev/zero of=$swapfile bs=1MiB count=1024
+    fi
+    chmod 0600 $swapfile
+    mkswap $swapfile
+    swapon $swapfile
+
+    # 两步安装最后扩容要用的软件
+    # feroda 默认不包含 cronie
+    # cloud-utils-growpart 需要用到 gdisk 处理 gpt 分区
+    cat <<EOF >/tmp/include-packages-for-resize
+    cronie
+    cloud-utils-growpart
+    gdisk 
+EOF
+fi
+
+# 重新整理 extra，因为grub会处理掉引号，要重新添加引号
+# 提取 extra.localtest extra.confhome extra.mirrorlist
+for var in $(grep -o '\bextra\.[^ ]*' /proc/cmdline | xargs); do
+    eval " $(echo $var | sed -E "s/extra\.([^=]*)=(.*)/\1='\2'/")"
+done
+
+# 设置安装源
+include=/tmp/include-url-command
+distro=$(awk -F: '{ print $3 }' </etc/system-release-cpe)
+releasever=$(awk -F: '{ print $5 }' </etc/system-release-cpe)
+# shellcheck disable=SC2154
+if [ "$localtest" = 1 ]; then
+    echo "url --url=$confhome/$releasever/" >$include
+    # echo cdrom >$include
+else
+    echo "url --mirrorlist=$mirrorlist" >$include
+    # 对于el7/fedora, 添加了 updates repo 才会安装最新的包
+    if [ "$releasever" = "7" ] || [ "$distro" = "fedoraproject" ]; then
+        echo "repo --name=updates" >>$include
+    fi
+fi
+%end
+
+##############################################
+%post
+# el9/fedora 需手动开启 root ssh 密码登录
+# rootpw --allow-ssh 9.1 以上才支持
+distro=$(awk -F: '{ print $3 }' </etc/system-release-cpe)
+releasever=$(awk -F: '{ print $5 }' </etc/system-release-cpe)
+if [ "$releasever" = "9" ] || [ "$distro" = "fedoraproject" ]; then
+    echo "PermitRootLogin yes" >/etc/ssh/sshd_config.d/01-permitrootlogin.conf
+fi
+
+# 分步安装的系统，要将最后一个分区（installer）合并到系统分区
+if [ -e /dev/disk/by-label/installer ]; then
+    # 提取 extra.confhome
+    eval "$(grep -o '\bextra\.[^ ]*' /proc/cmdline | sed 's/\bextra.//')"
+
+    cd /
+    curl -O $confhome/resize.sh
+    echo '@reboot root bash /resize.sh' >/etc/cron.d/resize
+fi
+%end
diff --git a/meta-data b/meta-data
new file mode 100644
index 0000000..e69de29
diff --git a/reinstall.sh b/reinstall.sh
index d59c2f9..6a19d10 100644
--- a/reinstall.sh
+++ b/reinstall.sh
@@ -1,65 +1,252 @@
 #!/bin/bash
+confhome=https://raw.githubusercontent.com/bin456789/reinstall/main
+localtest_confhome=http://192.168.253.1
 
-# todo 设置各种参数，例如是否自动安装
-localtest=0
-if [ $localtest == 1 ]; then
-    vmlinuz=http://192.168.43.139/images/pxeboot/vmlinuz
-    initrd=http://192.168.43.139/images/pxeboot/initrd.img
-    squashfs=http://192.168.43.139/LiveOS/squashfs.img
-    ks=http://192.168.43.139/ks-cd.cfg
-else
-    site=$(curl -L "http://mirrorlist.centos.org/?release=7&repo=os&arch=x86_64" | head -1)
-    vmlinuz=${site}images/pxeboot/vmlinuz
-    initrd=${site}images/pxeboot/initrd.img
-    squashfs=${site}LiveOS/squashfs.img
+usage_and_exit() {
+    echo "Usage: reinstall.sh centos-7/8/9 alma-8/9 rocky-8/9 fedora-36/37/38 ubuntu-20.04/22.04"
+    exit 1
+}
 
-    ks=https://xxx.com/ks.cfg
+is_in_china() {
+    # https://geoip.ubuntu.com/lookup
+    curl -L https://geoip.fedoraproject.org/city | grep -w CN
+}
+
+setos() {
+    step=$1
+    distro=$2
+    releasever=$3
+    ks=$4
+    vault=$5
+
+    setos_ubuntu() {
+        if [ "$localtest" = 1 ]; then
+            mirror=$confhome/
+            eval ${step}_ks=$confhome/$ks
+        else
+            if is_in_china; then
+                case "$basearch" in
+                "x86_64") mirror=https://mirrors.aliyun.com/ubuntu-releases/$releasever/ ;;
+                "aarch64") mirror=https://mirrors.aliyun.com/ubuntu-cdimage/releases/$releasever/release/ ;;
+                esac
+            else
+                case "$basearch" in
+                "x86_64") mirror=https://releases.ubuntu.com/$releasever/ ;;
+                "aarch64") mirror=https://cdimage.ubuntu.com/releases/$releasever/release/ ;;
+                esac
+            fi
+            eval ${step}_ks=$confhome/user-data
+        fi
+
+        case "$basearch" in
+        "x86_64") arch=amd64 ;;
+        "aarch64") arch=arm64 ;;
+        esac
+
+        filename=$(curl $mirror | grep -oP "ubuntu-$releasever.*?-live-server-$arch.iso" | head -1)
+        eval ${step}_iso=$mirror$filename
+        eval ${step}_distro=ubuntu
+    }
+
+    setos_rh() {
+        if [ "$localtest" = 1 ]; then
+            mirror=$confhome/$releasever/
+            eval ${step}_ks=$confhome/$ks
+        else
+            # 甲骨文 arm 1g内存，用 centos 7.9 镜像会 oom 进不了安装界面，所以用7.6
+            if [ "$vault" = 1 ]; then
+                if is_in_china; then
+                    [ "$basearch" = "x86_64" ] && dir= || dir=/altarch
+                    mirror="https://mirrors.aliyun.com/centos-vault$dir/7.6.1810/os/$basearch/"
+                else
+                    [ "$basearch" = "x86_64" ] && dir=centos || dir=altarch
+                    mirror=http://vault.centos.org/$dir/7.6.1810/os/$basearch/
+                fi
+            else
+                case $distro in
+                "centos")
+                    case $releasever in
+                    "7") mirrorlist="http://mirrorlist.centos.org/?release=7&arch=$basearch&repo=os" ;;
+                    "8") mirrorlist="http://mirrorlist.centos.org/?release=8-stream&arch=$basearch&repo=BaseOS" ;;
+                    "9") mirrorlist="https://mirrors.centos.org/mirrorlist?repo=centos-baseos-9-stream&arch=$basearch" ;;
+                    esac
+                    ;;
+                "alma") mirrorlist="https://mirrors.almalinux.org/mirrorlist/$releasever/baseos" ;;
+                "rocky") mirrorlist="https://mirrors.rockylinux.org/mirrorlist?arch=$basearch&repo=BaseOS-$releasever" ;;
+                "fedora") mirrorlist="https://mirrors.fedoraproject.org/mirrorlist?arch=$basearch&repo=fedora-$releasever" ;;
+                esac
+                # rocky/centos9 需要删除第一行注释， alma 需要替换$basearch，anigil 这个源不稳定
+                mirror=$(curl -L $mirrorlist | sed "/^#/d" | sed "/anigil/d" | head -1 | sed "s,\$basearch,$basearch,")
+                eval "${step}_mirrorlist='${mirrorlist}'"
+            fi
+            eval ${step}_ks=$confhome/$ks
+        fi
+
+        eval ${step}_distro=${distro}
+        eval ${step}_vmlinuz=${mirror}images/pxeboot/vmlinuz
+        eval ${step}_initrd=${mirror}images/pxeboot/initrd.img
+        eval ${step}_squashfs=${mirror}images/install.img
+
+        if [ "$releasever" = 7 ]; then
+            eval ${step}_squashfs=${mirror}LiveOS/squashfs.img
+        fi
+    }
+
+    if [ "$distro" = "ubuntu" ]; then
+        setos_ubuntu
+    else
+        setos_rh
+    fi
+}
+
+if [ "$EUID" -ne 0 ]; then
+    echo "Please run as root."
+    exit 1
 fi
 
-# 获取系统盘信息
-root_name=$(lsblk -l -o NAME,UUID,TYPE,MOUNTPOINT | tr -s ' ' | grep '/$' | cut -d ' ' -f1)
-root_uuid=$(lsblk -l -o NAME,UUID,TYPE,MOUNTPOINT | tr -s ' ' | grep '/$' | cut -d ' ' -f2)
-root_type=$(lsblk -l -o NAME,UUID,TYPE,MOUNTPOINT | tr -s ' ' | grep '/$' | cut -d ' ' -f3)
+opts=$(getopt -a -n $0 --options l --long localtest -- "$@")
+if [ "$?" != 0 ]; then
+    usage_and_exit
+fi
 
-# 清除之前的自定义启动条目
-sed -i '3,$d' /etc/grub.d/40_custom
+eval set -- "$opts"
+while true; do
+    case "$1" in
+    -l | --localtest)
+        localtest=1
+        confhome=$localtest_confhome
+        shift
+        ;;
+    --)
+        shift
+        break
+        ;;
+    *)
+        echo "Unexpected option: $1."
+        usage_and_exit
+        ;;
+    esac
+done
+
+# 检查是否为正确的系统名
+for re in \
+    "s,.*\b(centos|alma|rocky)(linux)?[ :-]?([789])\b.*,\1:\3,p" \
+    "s,.*\b(fedora)(linux)?[ :-]?(3[678])\b.*,\1:\3,p" \
+    "s,.*\b(ubuntu)(linux)?[ :-]?(2[02]\.04)\b.*,\1:\3,p"; do
+
+    finalos=$(echo "$@" | tr '[:upper:]' '[:lower:]' | sed -n -E "$re")
+    if [ -n "$finalos" ]; then
+        break
+    fi
+done
+if [ -z "$finalos" ]; then
+    echo "Please specify a proper os."
+    usage_and_exit
+fi
+
+# 最小安装的 debian 不包含 curl dmidecode
+install_pkg() {
+    pkgs=$1
+    for pkg in $pkgs; do
+        if ! command -v $pkg; then
+            {
+                { apt update && apt install -y $pkgs; } ||
+                    dnf install -y $pkgs ||
+                    yum install -y $pkgs ||
+                    zypper install -y $pkgs ||
+                    pacman -Syu $pkgs
+            } 2>/dev/null
+            break
+        fi
+    done
+}
+
+# 获取内存大小，lsmem最准确但centos7 arm不能用
+# arm 24g dmidecode 显示少了128m
+ram_size=$(lsmem -b | grep 'Total online memory:' | awk '{ print $NF/1024/1024 }')
+if [ -z $ram_size ]; then
+    install_pkg dmidecode
+    ram_size=$(dmidecode -t 17 | grep "Size.*[GM]B" | awk '{if ($3=="GB") s+=$2*1024; else s+=$2} END {print s}')
+fi
+
+if [ $ram_size -lt 1024 ]; then
+    echo 'RAM < 1G. Unsupported.'
+    exit 1
+fi
+
+install_pkg curl
+distro=$(echo $finalos | cut -d: -f1)
+releasever=$(echo $finalos | cut -d: -f2)
+basearch=$(uname -m)
+
+# 以下目标系统需要两步安装
+# ubuntu
+# el8/9/fedora 任何架构 <2g
+# el7 aarch64 <1.5g
+# shellcheck disable=SC2154
+if [ $distro = "ubuntu" ] ||
+    { [ $releasever -ge 8 ] && [ $ram_size -lt 2048 ]; } ||
+    { [ $releasever -eq 7 ] && [ $ram_size -lt 1536 ] && [ $basearch = "aarch64" ]; }; then
+    [ $distro = "ubuntu" ] && ks=user-data || ks=ks.cfg
+    setos finalos $distro $releasever $ks
+    setos nextos centos 7 ks-trans.cfg 1
+else
+    setos nextos $distro $releasever ks.cfg
+fi
 
 # 下载启动内核
-cd /
-curl -LO $vmlinuz
-curl -LO $initrd
-cd -
+# shellcheck disable=SC2154
+{
+    cd /
+    curl -LO $nextos_vmlinuz
+    curl -LO $nextos_initrd
+    touch reinstall.mark
+}
 
-if [ -d /sys/firmware/efi ]; then
+# 转换 finalos_a=1 为 finalos.a=1 ，排除 finalos_mirrorlist
+build_finalos_cmdline() {
+    for var in $(compgen -v finalos_); do
+        key=${var//_/.}
+        [ $key != "finalos.mirrorlist" ] && finalos_cmdline+=" $key=${!var}"
+    done
+}
+
+build_extra_cmdline() {
+    extra_cmdline+=" extra.confhome=$confhome"
+    if [ "$localtest" = 1 ]; then
+        extra_cmdline+=" extra.localtest=$localtest"
+    else
+        # 指定最终安装系统的 mirrorlist，链接有&，在grub中是特殊字符，所以要加引号
+        if [ -n "$finalos_mirrorlist" ]; then
+            extra_cmdline+=" extra.mirrorlist='$finalos_mirrorlist'"
+        elif [ -n "$nextos_mirrorlist" ]; then
+            extra_cmdline+=" extra.mirrorlist='$nextos_mirrorlist'"
+        fi
+    fi
+}
+
+# arm64 不需要添加 efi 字样
+if [ -d /sys/firmware/efi ] && [ "$basearch" = x86_64 ]; then
     action='efi'
-else
-    action='16'
 fi
 
-if [ $root_type == "lvm" ]; then
-    cat <<EOF >>/etc/grub.d/40_custom
+build_finalos_cmdline
+build_extra_cmdline
+grub_cfg=$(find /boot -type f -name grub.cfg -exec grep -E -l 'menuentry|blscfg' {} \;)
+grub_cfg_dir=$(dirname $grub_cfg)
+
+custom_cfg=$grub_cfg_dir/custom.cfg
+echo $custom_cfg
+# shellcheck disable=SC2154
+cat <<EOF | tee $custom_cfg
 menuentry "reinstall" {
     insmod lvm
     insmod xfs
-    set root=(lvm/$root_name)
-    linux$action /vmlinuz root=live:$squashfs inst.ks=$ks
+    search --no-floppy --file --set=root /reinstall.mark
+    linux$action /vmlinuz root=live:$nextos_squashfs inst.ks=$nextos_ks $finalos_cmdline $extra_cmdline
     initrd$action /initrd.img
-    }
+}
 EOF
 
-else
-    cat <<EOF >>/etc/grub.d/40_custom
-menuentry "reinstall" {
-    insmod xfs
-    search --no-floppy --fs-uuid --set=root $root_uuid
-    linux$action /vmlinuz root=live:$squashfs inst.ks=$ks
-    initrd$action /initrd.img
-    }
-EOF
-fi
-
-grub_cfg=$(find /boot -type f -name grub.cfg)
-grub-mkconfig -o $grub_cfg || grub2-mkconfig -o $grub_cfg
-grub-reboot reinstall || grub2-reboot reinstall
-cat $grub_cfg
-# reboot
+$(command -v grub-reboot grub2-reboot) reinstall
+echo "Please reboot to begin the installation."
diff --git a/resize.sh b/resize.sh
new file mode 100644
index 0000000..1c3d1af
--- /dev/null
+++ b/resize.sh
@@ -0,0 +1,44 @@
+#!/bin/bash
+PATH="/usr/sbin:/usr/bin"
+
+update_part() {
+  partprobe
+  partx -u $1
+  udevadm settle
+}
+
+# rh 自带 fdisk parted
+# ubuntu 自带 fdisk growpart
+
+# 找出主硬盘
+xda=$(lsblk -dn -o NAME | grep -E 'nvme0n1|.da')
+
+# 删除 installer 分区
+installer_num=$(readlink -f /dev/disk/by-label/installer | grep -o '[0-9]*$')
+if [ -n "$installer_num" ]; then
+  # 要添加 LC_NUMERIC 或者将%转义成\%才能在cron里正确运行
+  LC_NUMERIC=en_US.utf8
+  printf "d\n%s\nw" "$installer_num" | fdisk /dev/$xda
+  update_part /dev/$xda
+fi
+
+# 找出现在的最后一个分区，也就是系统分区
+# el7 的 lsblk 没有 --sort，所以用其他方法
+# shellcheck disable=2012
+part_num=$(ls -1v /dev/$xda* | tail -1 | grep -o '[0-9]*$')
+part_fstype=$(lsblk -no FSTYPE /dev/$xda$part_num)
+
+# 扩容分区
+# rh 7 不能用parted在线扩容，而fdisk扩容会改变 PARTUUID，所以用 growpart
+# printf 'yes\n100%%' | parted /dev/$xda resizepart $part_num ---pretend-input-tty
+growpart /dev/$xda $part_num
+update_part /dev/$xda
+
+# 扩容最后一个分区的文件系统
+case $part_fstype in
+xfs) xfs_growfs / ;;
+ext*) resize2fs /dev/$xda$part_num ;;
+esac
+
+# 删除脚本自身
+rm -f /resize.sh /etc/cron.d/resize
diff --git a/ubuntu-storage-early.sh b/ubuntu-storage-early.sh
new file mode 100644
index 0000000..c8549b7
--- /dev/null
+++ b/ubuntu-storage-early.sh
@@ -0,0 +1,127 @@
+#!/bin/bash
+sed -i '$d' /autoinstall.yaml
+xda=$(lsblk -dn -o NAME | grep -E 'nvme0n1|.da')
+# 是用 size 寻找分区，number 没什么用
+# https://curtin.readthedocs.io/en/latest/topics/storage.html
+size_os=$(lsblk -bn -o SIZE /dev/disk/by-label/os)
+
+if parted /dev/sda print | grep '^Partition Table' | grep gpt; then
+  # parted 3.1 on centos7 bug
+  # https://documentation.suse.com/zh-cn/sles/15/html/SLES-all/cha-expert-partitioner.html#sec-expert-partitioner-tables-gpt
+  parted /dev/$xda -s 'set 2 msftdata off' # os
+  parted /dev/$xda -s 'set 3 msftdata off' # installer
+
+  # efi
+  if [ -e /dev/disk/by-label/efi ]; then
+    size_efi=$(lsblk -bn -o SIZE /dev/disk/by-label/efi)
+    cat <<EOF >>/autoinstall.yaml
+storage:
+  config:
+    # disk
+    - ptable: gpt
+      path: /dev/$xda
+      preserve: true
+      type: disk
+      id: disk-xda
+    # efi 分区
+    - device: disk-xda
+      size: $size_efi
+      number: 1
+      preserve: true
+      grub_device: true
+      type: partition
+      id: partition-efi
+    - fstype: fat32
+      volume: partition-efi
+      type: format
+      id: format-efi
+    # os 分区
+    - device: disk-xda
+      size: $size_os
+      number: 2
+      preserve: true
+      type: partition
+      id: partition-os
+    - fstype: ext4
+      volume: partition-os
+      type: format
+      id: format-os
+    # mount
+    - path: /
+      device: format-os
+      type: mount
+      id: mount-os
+    - path: /boot/efi
+      device: format-efi
+      type: mount
+      id: mount-efi
+EOF
+  else
+    # bios 2t
+    size_biosboot=$(parted /dev/$xda unit b print | grep bios_grub | awk '{print $4}' | sed 's/B$//')
+    cat <<EOF >>/autoinstall.yaml
+storage:
+  config:
+    # disk
+    - ptable: gpt
+      path: /dev/$xda
+      preserve: true
+      grub_device: true
+      type: disk
+      id: disk-xda
+    # biosboot 分区
+    - device: disk-xda
+      size: $size_biosboot
+      number: 1
+      preserve: true
+      type: partition
+      id: partition-biosboot
+    # os 分区
+    - device: disk-xda
+      size: $size_os
+      number: 2
+      preserve: true
+      type: partition
+      id: partition-os
+    - fstype: ext4
+      volume: partition-os
+      type: format
+      id: format-os
+    # mount
+    - path: /
+      device: format-os
+      type: mount
+      id: mount-os
+EOF
+  fi
+else
+  # bios
+  cat <<EOF >>/autoinstall.yaml
+storage:
+  config:
+    # disk
+    - ptable: msdos
+      path: /dev/$xda
+      preserve: true
+      grub_device: true
+      type: disk
+      id: disk-xda
+    # os 分区
+    - device: disk-xda
+      size: $size_os
+      number: 1
+      preserve: true
+      type: partition
+      id: partition-os
+    - fstype: ext4
+      volume: partition-os
+      type: format
+      id: format-os
+    # mount
+    - path: /
+      device: format-os
+      type: mount
+      id: mount-os
+EOF
+fi
+echo ... >>/autoinstall.yaml
diff --git a/user-data b/user-data
new file mode 100644
index 0000000..b9c6e87
--- /dev/null
+++ b/user-data
@@ -0,0 +1,64 @@
+#cloud-config
+# 顺序 early-commands > 安装系统 > late-commands > 重启进入系统 > cloud-init: runcmd > cloud-init: 其他
+autoinstall:
+  version: 1
+  source:
+    id: ubuntu-server-minimal
+    search_drivers: false
+  timezone: Asia/Shanghai
+  ssh:
+    allow-pw: true
+    authorized-keys: []
+    install-server: true
+  early-commands:
+    - |
+      # 解决 20.04 不能识别硬盘
+      # https://askubuntu.com/questions/1302392/ubuntu-server-20-04-setup-stuck-at-block-probing-did-not-discover-any-disks
+      mount | grep /isodevice && { losetup -d /dev/loop0; umount -l /isodevice; } || true
+
+      # 提取 extra.confhome
+      eval "$(grep -o '\bextra\.[^ ]*' /proc/cmdline | sed 's/\bextra.//')"
+
+      # 生成分区信息
+      curl -L $confhome/ubuntu-storage-early.sh | bash -s
+
+      # 禁用 DNS  强制离线安装内核和跳过最后的更新
+      # 但安装器会配置时区和写入最近的mirror到/etc/apt/sources.list 所以要提前解析
+      echo $(dig +short geoip.ubuntu.com | grep -v '\.$' | head -1) geoip.ubuntu.com >>/etc/hosts
+      sed -i -E 's/(^nameserver )/#\1/' /etc/resolv.conf
+  late-commands:
+    - |
+      # root ssh 登录
+      echo "PermitRootLogin yes" >/target/etc/ssh/sshd_config.d/01-permitrootlogin.conf
+
+      # 还原 DNS
+      sed -i -E 's/^#(nameserver )/\1/' /etc/resolv.conf
+
+      # 提取 extra.confhome
+      eval "$(grep -o '\bextra\.[^ ]*' /proc/cmdline | sed 's/\bextra.//')"
+
+      # 下载合并分区脚本
+      cd /target
+      curl -O $confhome/resize.sh
+
+      # 升级 cloud-init
+      # curtin in-target --target=/target -- apt update
+      # curtin in-target --target=/target -- apt-get install --only-upgrade cloud-init
+  user-data:
+    runcmd:
+      - |
+        # 合并分区
+        bash /resize.sh
+    disable_root: false
+    users:
+      - name: root
+        lock_passwd: false
+    chpasswd:
+      expire: false
+      # 20.04 arm 需要
+      list: |
+        root:1
+      users:
+        - name: root
+          password: 1
+          type: text
diff --git a/vendor-data b/vendor-data
new file mode 100644
index 0000000..e69de29