gptzfsboot

I have a server that is still on 15.0-RELEASE and I was going to update to 15.1-RELEASE following the instructions provided here, starting with creating a backup with bectl. Bectl did not work, which I came to learn had to do with the layout of my root zpool. For some reason after installation...

man for gptzfsbool says "The first pool seen during probing is used as a default boot pool." Is there any way to boot from another pool?

I have (painfully) experienced the following problem and I would welcome the community's feedback before I go crazy: On a newly installed FreeBSD13.0 system, with legacy bios boot and gptzfsboot installed, the system will not boot if the pool has a bookmark created giving error : ZFS...

I have a problem (tried both freeNAS [11.2-U4 though 11.3-RC2] and freeBSD 12.1): When booting, I get gptzfsboot: error 128 lba some_block_number errors in the phase when gptzfsboot is probing my data HDDs (on which there is no bootloader, nor system, the drives can be even empty, with or...