I'm unsure if you are right about my store bought win10 USB supporting GPT if booted UEFI. MS docs say no: therefore I didn't think to even try it. I didn't know at the time my bios "ignores UEFI unless pre-selected" so I haven't tried it.
However I OEM disks are not like USB. You cannot download them without paying. That is why I gave the $$$ warning.
Complete nonsense. Guess what you can do with
efibootmgr(8).
Not non-sense. One must have to have TWO computers and two working internet connections to make that trick work: one for reading, the other for doing. I for instance don't have the forementioned. Also efibootmgr is not fowardly available during install to someonw who is thinking about not using win10. So I'm not wrong at all: my perspective differs.
efibootmgr is "cool and capable" but it is not for newbies and takes significant time to make use of, and is not fowardly available (visible, with help, online to someone just installing from win10 on a single PC). ehlo localhost? someone deleted help.txt from my sendmail pkg. Do you know what I'm talking about? I'm sure you do.
Things change rapidly: I just wrote in a blog "Steam/Linux quit and shame they don't run on BSD, win10 is getting too much". I saw minutes later a youtube on "SteamBSD 13.0" !! You can't blink these days without running into something big and new.
I think I was right in asking the person to:
1) check UEFI settings and Microsoft docs pertaining to them before beginning
2) be aware win10 has a history if disabling FreeBSD
3) consider buying hardware as an alternative sticky "sharing situations"
4) to know that win10 can and will WRITE OVER FreeBSD information on secondary drive in the system that has no win10 partitions on it that is of GPT type (happened to me)
I DO NOT believe UEFI has helped consumers it's been a contention of who owns the primary boot menu, way too much hacking to support it, failures (to install). If I could count for you the number of problems people have with it I can google? MBR ... that always worked, but of course is outdated. Also who says whether or not an EUFI shell is presented on all motherboard the asians board makers dont all agree what it is? Ok never mind. I am not a fan of things that are complicated yet are demanded of newbies to know before beginning and require a 2nd PC purchase for reference. I'm simply not going to say "I like UEFI" or it's great. For some yes for others it's a kinda terror. Ok?