Solved. Re: Dualboot and ZFS
Victor Sudakov
vas at mpeks.tomsk.su
Thu Mar 22 01:26:31 UTC 2018
Warren Block wrote:
> On Mon, 19 Mar 2018, Victor Sudakov wrote:
> >
> > sysctl kern.geom.debugflags=0x10
>
> Please reconsider doing this without it being required. It means "allow
> destroying mounted partitions" and is usually not necessary.
It is recommended, or even required ("must") by the zfsboot(8) man page:
EXAMPLES
zfsboot is typically installed using dd(1). To install zfsboot on the
ada0 drive:
dd if=/boot/zfsboot of=/dev/ada0 count=1
dd if=/boot/zfsboot of=/dev/ada0 iseek=1 oseek=1024
If the drive is currently in use, the GEOM safety will prevent writes and
must be disabled before running the above commands:
sysctl kern.geom.debugflags=0x10
zfsboot can also be installed in an MBR slice:
gpart create -s mbr ada0
gpart add -t freebsd ada0
gpart create -s BSD ada0s1
gpart bootcode -b /boot/boot0 ada0
gpart set -a active -i 1 ada0
dd if=/boot/zfsboot of=/dev/ada0s1 count=1
dd if=/boot/zfsboot of=/dev/ada0s1 iseek=1 oseek=1024
--
Victor Sudakov, VAS4-RIPE, VAS47-RIPN
AS43859
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