Issues with installing Red Hat Enterprise Linux image on a 64-bit x86 machine using Qemu

Hi all,
I am new to Qemu. I have downloaded several different images for Red Hat Enterprise Linux (Trial version), for instance,

rhel-server-6.10-x86_64-boot

I have produced an disk image using

qemu-img create LinuxEnterpriseDisk.img 10G

and then using this command to boot from the image rhel-server-6.10-x86_64-boot

The command is:

qemu-system-x86_64 -boot d -drive format=raw,file=LinuxEnterpriseServerDisk1.img,if=virtio,media=disk -drive format=qcow2,media=cdrom,file=rhel-server-6.10-update-11-x86_64-kvm.qcow2,if=virtio -drive format=qcow2,media=cdrom,file=rhel-baseos-9.0-x86_64-dvd,if=virtio -drive format=qcow2,media=cdrom,file=rhel-server-6.10-update-11-x86_64-kvm.qcow2,if=virtio -drive format=qcow2,media=cdrom,file=rhel-server-6.10-x86_64-boot,if=virtio

What is wrong with this?  I am getting a 'No Boot Device' found error?

Thanks,

Saad