Xen: Deleting Guests

I still can not get a Xen guest to see the CD-RW, which has been quite a hassle. In my repeated attempts, I've ended up with a bunch of tangling participles, which is to say I have several bogus configurations in the database. I finally found a way to purge an unwanted configuration.

[root@adama ~]# xm list
Name
Domain-0 ...
apollo01 ...
starbuck01 ...
starbuck02 ...
[root@adama ~]# virsh undefine starbuck02
Domain starbuck02 has been undefined

[root@adama ~]# xm list
Name
Domain-0 ...
apollo01 ...
starbuck01 ...
[root@adama ~]#

Now I can reuse the same name.