diff --git a/xCAT-test/autotest/testcase/packimg/cases0 b/xCAT-test/autotest/testcase/packimg/cases0
index 7655d5733..d8f8f7c2d 100644
--- a/xCAT-test/autotest/testcase/packimg/cases0
+++ b/xCAT-test/autotest/testcase/packimg/cases0
@@ -20,20 +20,18 @@ end
 
 start:packimage_imagename
 os:Linux
-description:check if packimage could work fine with image name
+description:
 cmd:ls /install/netboot/__GETNODEATTR($$CN,os)__/__GETNODEATTR($$CN,arch)__/compute/rootimg;if [ $? -eq 0 ];then mv -f /install/netboot/__GETNODEATTR($$CN,os)__/__GETNODEATTR($$CN,arch)__/compute/rootimg /rootimg.bak;fi
-cmd:ls /install/netboot/__GETNODEATTR($$CN,os)__/__GETNODEATTR($$CN,arch)__/compute/rootimg.tar.gz;if [ $? -eq 0 ];then mv -f /install/netboot/__GETNODEATTR($$CN,os)__/__GETNODEATTR($$CN,arch)__/compute/rootimg.tar.gz /rootimg.tar.gz.bak;fi
+cmd:ls /install/netboot/__GETNODEATTR($$CN,os)__/__GETNODEATTR($$CN,arch)__/compute/rootimg.cpio.gz;if [ $? -eq 0 ];then mv -f /install/netboot/__GETNODEATTR($$CN,os)__/__GETNODEATTR($$CN,arch)__/compute/rootimg.cpio.gz /rootimg.cpio.gz.bak;fi
 cmd:genimage __GETNODEATTR($$CN,os)__-__GETNODEATTR($$CN,arch)__-netboot-compute
 check:rc==0
 cmd:ls -l /install/netboot/__GETNODEATTR($$CN,os)__/__GETNODEATTR($$CN,arch)__/compute/rootimg
 check:rc==0
 cmd:packimage __GETNODEATTR($$CN,os)__-__GETNODEATTR($$CN,arch)__-netboot-compute
 check:rc==0
-cmd:ls -l /install/netboot/__GETNODEATTR($$CN,os)__/__GETNODEATTR($$CN,arch)__/compute
+cmd:ls -l /install/netboot/__GETNODEATTR($$CN,os)__/__GETNODEATTR($$CN,arch)__/compute/rootimg.cpio.gz
 check:rc==0
-cmd:ls -l /install/netboot/__GETNODEATTR($$CN,os)__/__GETNODEATTR($$CN,arch)__/compute/rootimg.tar.gz
-check:rc==0
-cmd:rm -rf /install/netboot/__GETNODEATTR($$CN,os)__/__GETNODEATTR($$CN,arch)__/compute/rootimg.tar.gz
+cmd:rm -rf /install/netboot/__GETNODEATTR($$CN,os)__/__GETNODEATTR($$CN,arch)__/compute/rootimg.cpio.gz
 cmd:mv -f /rootimg.cpio.gz.bak /install/netboot/__GETNODEATTR($$CN,os)__/__GETNODEATTR($$CN,arch)__/compute/rootimg.cpio.gz
 cmd:rm -rf /install/netboot/__GETNODEATTR($$CN,os)__/__GETNODEATTR($$CN,arch)__/compute/rootimg
 cmd:mv -f /rootimg.bak /install/netboot/__GETNODEATTR($$CN,os)__/__GETNODEATTR($$CN,arch)__/compute/rootimg
diff --git a/xCAT-test/autotest/testcase/rmimage/case0 b/xCAT-test/autotest/testcase/rmimage/case0
index 47c455aaa..a5f1ea566 100644
--- a/xCAT-test/autotest/testcase/rmimage/case0
+++ b/xCAT-test/autotest/testcase/rmimage/case0
@@ -7,9 +7,7 @@ cmd:genimage __GETNODEATTR($$CN,os)__-__GETNODEATTR($$CN,arch)__-netboot-compute
 check:rc==0
 cmd:packimage __GETNODEATTR($$CN,os)__-__GETNODEATTR($$CN,arch)__-netboot-compute
 check:rc==0
-cmd:ls  /install/netboot/__GETNODEATTR($$CN,os)__/__GETNODEATTR($$CN,arch)__/compute/
-check:rc==0
-cmd:cp -f /install/netboot/__GETNODEATTR($$CN,os)__/__GETNODEATTR($$CN,arch)__/compute/rootimg.tar.gz /install/netboot/__GETNODEATTR($$CN,os)__/__GETNODEATTR($$CN,arch)__/compute/rootimg.gz
+cmd:cp -f /install/netboot/__GETNODEATTR($$CN,os)__/__GETNODEATTR($$CN,arch)__/compute/rootimg.cpio.gz /install/netboot/__GETNODEATTR($$CN,os)__/__GETNODEATTR($$CN,arch)__/compute/rootimg.gz
 check:rc==0
 cmd:rmimage __GETNODEATTR($$CN,os)__-__GETNODEATTR($$CN,arch)__-netboot-compute
 check:rc==0
@@ -17,7 +15,7 @@ check:output=~Removing directory /install/netboot/__GETNODEATTR($$CN,os)__/__GET
 check:output=~Removing file /install/netboot/__GETNODEATTR($$CN,os)__/__GETNODEATTR($$CN,arch)__/compute/kernel
 check:output=~Removing file /install/netboot/__GETNODEATTR($$CN,os)__/__GETNODEATTR($$CN,arch)__/compute/initrd-stateless.gz
 check:output=~Removing file /install/netboot/__GETNODEATTR($$CN,os)__/__GETNODEATTR($$CN,arch)__/compute/initrd-statelite.gz
-check:output=~Removing file /install/netboot/__GETNODEATTR($$CN,os)__/__GETNODEATTR($$CN,arch)__/compute/rootimg.tar.gz
+check:output=~Removing file /install/netboot/__GETNODEATTR($$CN,os)__/__GETNODEATTR($$CN,arch)__/compute/rootimg.cpio.gz
 check:output=~Removing file /install/netboot/__GETNODEATTR($$CN,os)__/__GETNODEATTR($$CN,arch)__/compute/rootimg.gz
 check:output=~Removing directory /tftpboot/xcat/osimage/__GETNODEATTR($$CN,os)__-__GETNODEATTR($$CN,arch)__-netboot-compute
 check:output=~Image files have been removed successfully from this management node.