Hello. First of all, hardware: MB: supermicro MBD-X8TL-IF-O, 4x1Tb Seagate Barracuda I did raidz1 ZFS setup of FreeBSD 8 stable with the help of this article: http://wiki.freebsd.org/RootOnZFS/GPTZFSBoot/RAIDZ1 Then i did csup to 8 stable and rebuild world/kernel, upgraded zfs to v14, also installed updated loader: gpart bootcode -p /boot/gptzfsboot -i 1 ad4 Well, everything is ok untill i reboot and remove one of HDDs, then i got this: Code: can't work out which disk we're booting from. can't load kernel and sometimes: Code: assertation failed. Function ficlCompileSoftCore ... The question is: am I doing something wrong or it should work somehow different then i expect? Thanks in advance..