I partitioned a clean 2TB drive with Linux. 1G = UEFI (empty), 275G NetBSD, and after installing NetBSD, 275G OpenBSD.
I installed and did some configuring package adding to NetBSD. Then used Linux to create the OpenBSD partition, and changed the type to OpenBSD, so it would recognize it. Then installed OpenBSD. All went well. When I rebooted, I get a menu from NetBSD that is prior to the normal one. It says:
Fn: diskn
1: NetBSD
- swap
Of course swap is OpenBSD, and it boots just fine. My question is how to change "swap" to OpenBSD? The UEFI part is still completely empty, and I'm wanting to add FreeBSD after I get this sorted out. Then Linux and install rEFInd because it boots all of the above.
I've searched for boot menu; multiboot and though I came across some interesting things, nothing tells me what I want to know. I looked in boot.cfg, but it does not have those entries listed. It does have two entries for booting listed, but I'm not convinced that file needs editing. The man page for it didn't look like it would do me any good.