Upgrading Boot Loader

Volodymyr Kostyrko c.kworr at gmail.com
Mon Aug 2 19:39:15 UTC 2010

02.08.2010 22:29, Tim Gustafson написав(ла):
>> PS: I've just recently changed my mind and moved from dedicated
>> vdevs to gpart. This gives possibility of:
>> 1. Having raw swap partition suitable for swapping/dumping.
>> 2. Updating bootcode online without loosing uptime.
>> Just in expense of some kilobytes of disk space.
> I too am using gpart to partition the drives: ad8 and ad10 are partitioned using gpart.  I'm attaching the output of "gpart list" to this e-mail.  Is there an easier/better way to upgrade the boot loader with gpart partitions?

Then you have no need in zfsboot, you shoud use gptzfsboot instead.

gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 1 ad8
gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 1 ad10

This will install Protective MBR to first disk sector and bootcode to 
first partition. You can backup them just-in-case or update one disk and 
try to boot from it leaving second as the known to work solution.

Sphinx of black quartz judge my vow.

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