> You could try dropping to a shell in the installer and modifying install.md to > remove the -c option to installboot: > > # sed -i.bak 's/installboot -cr/installboot -r/' install.md > > Do this before starting the installation, and use UEFI with GPT for this > install. Let us know if it works or if anything changes.
Do I really let you know if it works? Of course it works! I am sending this mail after the installation success using your modifications! One question please, is it something about OpenBSD that you DON'T KNOW yet? Thank you. I am not sure if this is a bug or a feature. I can go on with my computer model using this modification done before install. I've read the man page for installboot -c but i am not sure what -c is doing different from -r. Maybe someone can tell from the code. I can confirm that install works without modification for more recent computer: HP with Intel i5-6500/8500 based.

