[HELP] How to ADD bios boot entries to boot config?

Using this technique, I deleted extraneous BIOS boot entries.

Unfortunately, I also deleted the entry for the physical disk on which the bootloader and OS are installed. Now my only option for booting is to manually select the Clover EFI partition in BIOS. So, I need info/help on how to ADD the physical HD entries to the boot config.

I'm reluctant to reinstall Clover because of the considerable post-install config I've done since then. And I'm unsure if it'll actually fix the problem.

tl;dr need to add an entry to boot config for the HD on which the operating system is installed so BIOS can locate the EFI partition.

Thanks.