How to reset SUSE+XEN DomU root password ?

xen-host:/etc/xen/vm # xm create myvm extra=" single"　<-- " sinhle" の前にスペース
Using config file "./myvm".　<-- xm create -c /etc/xen/vm/myvm extra=" single"もOK
Started domain myvm (id=26)
xen-host:/etc/xen/vm # xm console myvm

[ 0.000000] Initializing cgroup subsys cpuset

: 中略

[ 3.757901] kjournald starting. Commit interval 15 seconds
[ 3.757971] EXT3-fs (xvda2): using internal journal
[ 3.758025] EXT3-fs (xvda2): mounted filesystem with ordered data mode
Give root password for maintenance
(or type Control-D to continue):
Login incorrect.
Give root password for maintenance
(or type Control-D to continue): sulogin: read(/dev/xvc0): Operation not permitted


oooop ! どうすりゃいいのだ？
Give root password for maintenance
(or type Control-D to continue):

Orz.....

There is the other way to reset XEN guest root's password ....
Continue... I'm sorry of this discription is written by Japanese, If you need, Please Translate link.