1. If the OVF is zipped, Unzip the appliance image:

$ unzip evm-v5.1.0.4-r.zip

2. Convert each of the 5 disks from VMDK format to RAW:
$ for i in `seq 1 5`; do qemu-img convert -p evm-v5.1.0.4-r/ovf-disk$i.vmdk disk$i.img; done

3. Remove unneeded files
$ rm -rf evm-v5.1.0.4-r/

4. Move your disk[1-5].img into place in /var/lib/libvirt/images, with the correct ownership.

5. Use virt-manager to create a VM such that disk1.img is an IDE disk, and disk[2-5].img are SCSI disks.  If it helps, here’s the libvirt XML for my VM:

$ virsh dumpxml cloudforms2

<domain type='kvm' id='7'>
<name>cloudforms2</name>
<uuid>17b323fa-27fc-39a2-382d-5e3d0fd70cbc</uuid>
<memory unit='KiB'>4194304</memory>
<currentMemory unit='KiB'>4194304</currentMemory>
<vcpu placement='static'>4</vcpu>
<os>
<type arch='x86_64' machine='pc-1.2'>hvm</type>
<boot dev='hd'/>
</os>
<features>
<acpi/>
<apic/>
<pae/>
</features>
<clock offset='utc'/>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>restart</on_crash>
<devices>
<emulator>/usr/bin/qemu-kvm</emulator>
<disk type='file' device='disk'>
<driver name='qemu' type='raw'/>
<source file='/var/lib/libvirt/images/disk1.img'/>
<target dev='hda' bus='ide'/>
<alias name='ide0-0-0'/>
<address type='drive' controller='0' bus='0' target='0' unit='0'/>
</disk>
<disk type='file' device='disk'>
<driver name='qemu' type='raw'/>
<source file='/var/lib/libvirt/images/disk2.img'/>
<target dev='sda' bus='scsi'/>
<alias name='scsi0-0-0'/>
<address type='drive' controller='0' bus='0' target='0' unit='0'/>
</disk>
<disk type='file' device='disk'>
<driver name='qemu' type='raw'/>
<source file='/var/lib/libvirt/images/disk3.img'/>
<target dev='sdb' bus='scsi'/>
<alias name='scsi0-0-1'/>
<address type='drive' controller='0' bus='0' target='0' unit='1'/>
</disk>
<disk type='file' device='disk'>
<driver name='qemu' type='raw'/>
<source file='/var/lib/libvirt/images/disk4.img'/>
<target dev='sdc' bus='scsi'/>
<alias name='scsi0-0-2'/>
<address type='drive' controller='0' bus='0' target='0' unit='2'/>
</disk>
<disk type='file' device='disk'>
<driver name='qemu' type='raw'/>
<source file='/var/lib/libvirt/images/disk5.img'/>
<target dev='sdd' bus='scsi'/>
<alias name='scsi0-0-3'/>
<address type='drive' controller='0' bus='0' target='0' unit='3'/>
</disk>
<controller type='usb' index='0'>
<alias name='usb0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
</controller>
<controller type='ide' index='0'>
<alias name='ide0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
</controller>
<controller type='scsi' index='0'>
<alias name='scsi0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
</controller>
<interface type='network'>
<mac address='52:54:00:07:10:58'/>
<source network='default'/>
<target dev='vnet0'/>
<model type='virtio'/>
<alias name='net0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
</interface>
<input type='mouse' bus='ps2'/>
<graphics type='vnc' port='5900' autoport='yes' listen='127.0.0.1'>
<listen type='address' address='127.0.0.1'/>
</graphics>
<video>
<model type='vmvga' vram='9216' heads='1'/>
<alias name='video0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
</video>
<memballoon model='virtio'>
<alias name='balloon0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
</memballoon>
</devices>
<seclabel type='none'/>
</domain>

Credits

Jim Minter – Thanks for the instructions on how to achieve this.