How do I install the driver (rpm) during OM installation?

Like “inst.dd” in Red Hat.

Maybe OEMDRV disk is working here?

OpenMandriva uses Calamares installer. Red Hat and Fedora use Anaconda installer. They are not the same. I don’t know anything about either of the tools you mention.

Post-edit: With OpenMandriva Lx ISO’s it is possible to upgrade or install a .rpm package after you boot to ‘Live’ mode. I do not know of any way to do this before booting to ‘Live’.

I hope this was helpful information.

Ok, thank you, Ben!