[libvirt-users] Custom bios image for qemu

Hello all, So I am trying to get a qemu guest to use a custom patched seabios image rather than the default /usr/share/qemu/bios.bin I have tried changing the domain config file to include either: <os> --SNIP-- <loader readonly='yes' type='rom'>/home/telemin/qemu/seabios_patched.bin</loader> </os> OR domain type='kvm' xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0' --SNIP-- <qemu:commandline> <qemu:arg value='-smbios'/> <qemu:arg value='file=/home/telemin/qemu/seabios_patched.bin'/> </qemu:commandline> --SNIP-- And neither of these approaches result in the new seabios_patched.bin being used. I am clearly missing something here, can anyone with some more experience tell me what it is please? Many Thanks Phil Tooley