xm list | grep <VMName>
xm block-list <VMName_Number>
xm block-detach <VMName_Number> <VMName_Vdev> -f
xm block-attach <VMName_Number> file:///iso/disk.iso \
hdc:cdrom r

The [selfnote] Change CD-image while (HVM) domU is running by Cyconet Blog, unless otherwise expressly stated, is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported License. Terms and conditions beyond the scope of this license may be available at blog.waja.info.
Brunner Bäcker
Aldi
Städtischer Kinderspielplatz
Kindergarten Am Storchennest
Volksfestplatz Bayreuth
xm domid # instead of list | grep
there was an “VMName” behind the ‘domid’, but it got eaten by the html-markup-remover…