Incomplete installation of 12.1-R on an Asus laptop

[salvatorembartolotta at libero.it]

Good afternoon (in the U.S.A.),

I installed 12.1-R on an Asus laptop - well, almost.  The partition editor, apparently, didn't see the 260MB EFI partition and wanted to create a _second_ EFI partition, in the middle of the disk, right before the rootfs (monted on /), what made little sense to me. I said "no", making the system, for the time being, unbootable.  The installation completed except for that step.

nvd0 GPT layout:
nvd0p1 260 MB EFI partition
nvd0p2 16MB M$ reserved partition
nvd0p3 256GB M$ system and data partition
nvd0p4 512KB freebsd-boot
nvd0p5 2GB rootfs, mounted on /)
nvd0p6 80 GB swap (on a 32GB RAM system, maybe overkill)
nvd0p7 26GB varfs, mounted on /var
nvd0p8 14GB tmpfs, mounted on /tmp, may be ovewrkill as well
nvd0p9 134GB usrfs, mounted on /usr
....
nvd0lastpartition 650MB M$ Recovery partition

I hope there is some simple way to complete this FreeBSD installation, by adding the appropriate booting code to the _existing_ EFI partition.

Thanks for your help and advice.