diff --git a/arm_virt/README.md b/arm_virt/README.md
index 56c083edd1d60fee4dc647b0317c81338a10601c..4dc3aed1682eaab1edd3e0fb0a9a7222fd43c155 100755
--- a/arm_virt/README.md
+++ b/arm_virt/README.md
@@ -55,7 +55,7 @@ b) Prepare flash image file. Now its capacity was hard-coded 64M with 3 partitio
 ```
 sudo modprobe mtdram total_size=65536 erase_size=256
 sudo mtdpart add /dev/mtd0 kernel 0 10223616
-sudo mtdpart add /dev/mtd0 kernel 10223616 10485760
+sudo mtdpart add /dev/mtd0 bootarg 10223616 262144
 sudo mtdpart add /dev/mtd0 root 10485760 56623104
 sudo nandwrite -p /dev/mtd1 out/qemu_arm_virt_ca7/OHOS_Image.bin
 echo -e "bootargs=root=cfi-flash fstype=jffs2 rootaddr=0xA00000 rootsize=27M\x0" | sudo nandwrite -p /dev/mtd2 -
diff --git a/arm_virt/README_zh.md b/arm_virt/README_zh.md
index 989a4c47b876c91227b269610148060b58d80311..e696f38974257b96e7c701274d7328918e0abeec 100755
--- a/arm_virt/README_zh.md
+++ b/arm_virt/README_zh.md
@@ -49,7 +49,7 @@ b) 准备flash映像文件。目前系统硬编码flash容量64M，分三个分
 ```
 sudo modprobe mtdram total_size=65536 erase_size=256
 sudo mtdpart add /dev/mtd0 kernel 0 10223616
-sudo mtdpart add /dev/mtd0 kernel 10223616 10485760
+sudo mtdpart add /dev/mtd0 bootarg 10223616 262144
 sudo mtdpart add /dev/mtd0 root 10485760 56623104
 sudo nandwrite -p /dev/mtd1 out/qemu_arm_virt_ca7/OHOS_Image.bin
 echo -e "bootargs=root=cfi-flash fstype=jffs2 rootaddr=0xA00000 rootsize=27M\x0" | sudo nandwrite -p /dev/mtd2 -