I am trying to install SLES12 sp3 on a Lenovo SR650 server.

I used Rufus to create a bootable USB drive. I selected DD image mode as suggested.

The only folder on the USB is EFI. The SLES12sp3 DVD 1 installation files are not there even though I selected them.

However the server says it cannot find a bootable device.

I have done the F12 one time boot option and set to legacy BIOS.

I'm not finding any documentation as to what could be wrong and am lost.

Any assistance is appreciated,

Thank you.