Date: Fri, 11 Jan 2019 14:08:07 -0800 From: Walter Parker <walterp@gmail.com> To: freebsd-stable@freebsd.org Subject: Boot from one drive and load FreeBSD from another Message-ID: <CAMPTd_AqpY05xSFwj721SNspuRS5b_=CYvCSRXePNQT1TYzaYg@mail.gmail.com>
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Hi, I'd like to boot FreeBSD 12 on a system where the OS is installed to a ZFS pool that can't be booted by the OS. This is a pre-UEFI machine. It has a pair of SAS drives and 3 PCIe slots. What I'd like to do is put the boot loader on the SAS drive and then have FreeBSD load from a ZFS mirror created using 2 nvme SSD drives on PCIe to M.2 adapter cards. The BIOS is old enough that it will not boot from a PCIe card. If I create a FreeBSD-boot partition on the SAS drive and a FreeBSD-zfs partition on the ZFS mirror, will the boot partition loader automatically find the ZFS pool? If not, is there anything special I can do to force a boot? Second, if I want to do this on a second machine that does have UEFI, can I do the same thing? This time, I think would I would do is put a UEFI boot partition on the SAS drive and have it find the FreeBSD-zfs partition on the ZFS mirror. Thank you, Walter -- The greatest dangers to liberty lurk in insidious encroachment by men of zeal, well-meaning but without understanding. -- Justice Louis D. Brandeis
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