It show menu, then tying to load kernel, but fails. ZFS: i/o error - all block copies unavailable Installed via default installer. Same setup on hyper-v 2012r2 works fine. Same setup on FreeBSD 12,11,10 on hyper-v 2012 works fine. Setup with root on UFS works fine. A few more info, including one workaround: https://forums.freebsd.org/threads/freebsd-13-0-with-root-on-zfs-on-hyper-v-2012.81168/
^Triage: to submitter: is this PR still valid with recent versions of FreeBSD?