Nevermind. I discovered today that in order to remove zfs and install ufs it is not sufficient to use wipefs from linux. Even if the install with the new ufs system went well, refind may find the zfs system and boot it event though the ufs system has been installed on the very same disk. At least if...

I have a desktop computer with 6 disks. 1 windows, 2 gentoo linux root disks in raid, 2 gentoo linux home disks in raid and 1 that varies over time. I boot via refind that is installed on the windows disk. On this last disk I installed GhostBSD. After running it for a while I decided I would try ins...