Well, I wanted to try using FreeBSD. But I have newer hardware so I have to use STABLE branch (because of AMD Renoir support). However, during installation, well after I partitioned my disk. An error showed up that msdosfs couldn't mount /boot/efi. I tried both ZFS and UFS file systems. None of them worked.
Which installer did you use, exactly? The name of the downloaded file will help. If the installer proceeded to completion, please share output from the following commands: uname -aKU gpart show gpart show -l geom disk list
(In reply to Graham Perrin from comment #1) Not sure if you meant this, but I used FreeBSD-13.0-STABLE-memstick.img images. The ones I used were from February 3rd, 10th and 17th. All of them failed at the exact same point in mounting the /boot/iso so I cannot show the output of the commands you want. I'm sorry.
I have a similar issue. Steps to reproduce: Install FreeBSD 13 release under UEFI mode, then make world in 13-STABLE, reboot, /boot/efi is no longer mountable.
Thank you. (In reply to Tobias from comment #2) Are symptoms reproducible with a recent installer? (In reply to Jack from comment #3) Are symptoms reproducible with a recent update from source? <https://github.com/freebsd/freebsd-src/blob/main/UPDATING#L4-L5>