diff --git a/debian/changelog b/debian/changelog
index 0dc9fd6..23dd1e4 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,9 @@
+kylin-os-installer (0.2.1-0k12) yangtze; urgency=medium
+
+  * 小容量硬盘方案
+
+ -- tangzhicheng <tangzhicheng@kylinos.cn>  Fri, 14 Oct 2022 16:12:21 +0800
+
 kylin-os-installer (0.2.1-0k11) yangtze; urgency=medium
 
   * Rebuild from arm64. 
diff --git a/scripts/autopart-efi.sh b/scripts/autopart-efi.sh
index 61c5a84..8af4888 100755
--- a/scripts/autopart-efi.sh
+++ b/scripts/autopart-efi.sh
@@ -17,6 +17,23 @@ disk=$(get_value devpath)
 size=$(fdisk -s "${disk}")
 real_size=$(( size / 1024 ))
 
+
+if [ $real_size -lt ${DISK_MINSIZE} ]; then
+    ### efi
+    efi=512
+    ### boot
+    boot=1024
+    
+    ### root
+    root_size=$(( real_size - efi - boot ))
+    
+    echo "efi: $efi"
+    echo "boot: $boot"
+    echo "root_size: $root_size"
+    return 0
+
+fi
+
 disk_custom=$(get_value disk-custom)
 
 if [[ "${disk_custom}" == "true" ]]; then
diff --git a/scripts/autopart.sh b/scripts/autopart.sh
index 87a6484..9e9c551 100755
--- a/scripts/autopart.sh
+++ b/scripts/autopart.sh
@@ -16,6 +16,19 @@ disk=$(get_value devpath)
 size=$(fdisk -s "${disk}")
 real_size=$(( size / 1024 ))
 
+if [ $real_size -lt ${DISK_MINSIZE} ]; then
+    ### boot
+    boot=1024
+
+    ### root
+    root_size=$(( real_size - boot ))
+
+    echo "boot: $boot"
+    echo "root_size: $root_size"
+    return 0
+
+fi
+
 disk_custom=$(get_value disk-custom)
 
 if [[ "${disk_custom}" == "true" ]]; then
diff --git a/scripts/prepare/10partition b/scripts/prepare/10partition
index cc09bdd..570ee51 100755
--- a/scripts/prepare/10partition
+++ b/scripts/prepare/10partition
@@ -32,6 +32,13 @@ start=$((start + 1))
 if [[ "${isluks_lvm}" == "true" ]]; then
   parted -s "${disk}" mkpart logical ext4 "${start}"MiB 100%
 else
+  if [ $real_size -lt ${DISK_MINSIZE} ]; then
+        parted -s "${disk}" mkpart logical ext4 "${start}"MiB 100%
+	parted -s "${disk}" set 1 boot on
+	partprobe "${disk}"
+	sync
+        return 0
+  fi
   parted -s "${disk}" mkpart logical ext4 "${start}"MiB "${end}"MiB
 fi
 
@@ -55,6 +62,12 @@ if [[ "${isluks_lvm}" == "true" ]]; then
   echo "${disk##*/}5_crypt UUID=${root_uuid} none luks" >/etc/crypttab
   pvcreate -ffy /dev/mapper/"${disk##*/}"5_crypt
   vgcreate kylin-vg /dev/mapper/"${disk##*/}"5_crypt
+
+  if [ $real_size -lt ${DISK_MINSIZE} ]; then
+        lvcreate --wipesignatures n -l 100%free -n root kylin-vg
+        return 0
+  fi
+
   lvcreate --wipesignatures n -L "${root_size}" -n root kylin-vg
   lvcreate --wipesignatures n -L "${backup_size}" -n backup kylin-vg
   lvcreate --wipesignatures n -L "${data_size}" -n data kylin-vg
diff --git a/scripts/prepare/10partition-efi b/scripts/prepare/10partition-efi
index 21f9182..2e71a13 100755
--- a/scripts/prepare/10partition-efi
+++ b/scripts/prepare/10partition-efi
@@ -34,6 +34,13 @@ end=$((end + root_size))
 if [[ "${isluks_lvm}" == "true" ]]; then
   parted -s "${disk}" mkpart "SYSROOT" ext4 "${start}"MiB 100%
 else
+  if [ $real_size -lt ${DISK_MINSIZE} ]; then
+	parted -s "${disk}" mkpart "SYSROOT" ext4 "${start}"MiB 100%
+	parted -s "${disk}" set 1 esp on
+	partprobe "${disk}"
+	sync
+	return 0
+  fi
   parted -s "${disk}" mkpart "SYSROOT" ext4 "${start}"MiB "${end}"MiB
 fi
 
@@ -58,6 +65,12 @@ if [[ "${isluks_lvm}" == "true" ]]; then
   echo "${disk##*/}3_crypt UUID=${root_uuid} none luks" >/etc/crypttab
   pvcreate -ffy /dev/mapper/"${disk##*/}"3_crypt
   vgcreate kylin-vg /dev/mapper/"${disk##*/}"3_crypt
+  
+  if [ $real_size -lt ${DISK_MINSIZE} ]; then
+	lvcreate --wipesignatures n -l 100%free -n root kylin-vg
+	return 0
+  fi
+
   lvcreate --wipesignatures n -L "${root_size}" -n root kylin-vg
   lvcreate --wipesignatures n -L "${backup_size}" -n backup kylin-vg
   lvcreate --wipesignatures n -L "${data_size}" -n data kylin-vg
diff --git a/scripts/prepare/13mount-target b/scripts/prepare/13mount-target
index 07478bb..7861519 100755
--- a/scripts/prepare/13mount-target
+++ b/scripts/prepare/13mount-target
@@ -70,6 +70,20 @@ if [[ "${is_efi}" == "true" ]]; then
     part_swap="/dev/mapper/kylin--vg-swap"
   fi
 
+  if [ $real_size -lt ${DISK_MINSIZE} ]; then
+  	
+	mkfs.ext4 -Fq -L SYSROOT "${part_root}"
+  	
+	mkdir -p /target
+  	mount "${part_root}" /target
+  	mkdir -p /target/boot
+  	mount "${disk}2" /target/boot
+  	mkdir -p /target/boot/efi
+  	mount "${disk}1" /target/boot/efi
+       
+       	return 0
+  fi
+
   mkfs.ext4 -Fq -L SYSROOT "${part_root}"
   mkfs.ext4 -Fq -L KYLIN-BACKUP "${part_backup}"
   mkfs.ext4 -Fq -L DATA "${part_data}"
@@ -116,6 +130,17 @@ else
     part_data="/dev/mapper/kylin--vg-data"
     part_swap="/dev/mapper/kylin--vg-swap"
   fi
+  
+  if [ $real_size -lt ${DISK_MINSIZE} ]; then
+
+  	mkfs.ext4 -Fq -L SYSROOT "${part_root}"
+  	mkdir -p /target
+  	mount "${part_root}" /target
+  	mkdir -p /target/boot
+  	mount "${disk}1" /target/boot
+
+        return 0
+  fi
 
   mkfs.ext4 -Fq -L SYSROOT "${part_root}"
   mkfs.ext4 -Fq -L KYLIN-BACKUP "${part_backup}"
diff --git a/scripts/utils b/scripts/utils
index 9221737..4b428d7 100644
--- a/scripts/utils
+++ b/scripts/utils
@@ -6,6 +6,8 @@ CONFIGFILE=/tmp/ky-installer.cfg
 LOG_FILE=/var/log/installer/kylin-os-installer.log
 IN_TARGET=/tmp/k-i/
 
+DISK_MINSIZE=32799
+
 msg() {
     echo "$(date +'%Y-%m-%d %H:%M:%S') $*" >&2
 }