Follow-up to <https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=287719#c6>
Good news. 2048 MB is sufficient with root-on-ZFS for an ordinary installation (more than base, less than all of FreeBSD-base) of 15.0-ALPHA4 plus these five non-base packages, some of which are meta: kde plasma6-sddm-kcm sddm virtualbox-guest-additions xorg Beyond initial installations: with 4 G swap enabled, I repeatedly tested forced reinstallation of all packages, pkg upgrade -fUy 1077 packages, 1886 steps. Success. ---- With swap disabled, which I would not recommend: - reinstallation failed, switch from ttyv1 to ttyv2 was impossible, and so on, so I attempted a shut down <https://i.imgur.com/RftLGMu.png> - shut down failed - following a forced stop of the computer, SDDM and the desktop environment were unsable (pkg issue 2441, second incident this morning).