On May 12, 2013, at 23:17 , Jeremy Chadwick wrote:
> On Sun, May 12, 2013 at 10:20:26PM -0400, Chris Ross wrote:
>> In the past, I've found I've been unable to install all of the bootblocks if
>> I
>> boot from the ZFS root. When booting from a cd, the basic:
>>
>> gpart bootcode -p ${bootdir}/zfsboot ${disk}
>> dd if=${bootdir}zfsloader of=/dev/${disk}a bs=512 oseek=1024
>> conv=notrunc,sync
>>
>> works. But, if I boot from ZFS, then I can't dd anything into the front of
>> the
>> drives. Right now, the problem after booting from the CD, is trying to mount
>> a read/write filesystem (mfs, or the like) so that I can scp the bootblocks
>> onto the
>> system and install them. But, I eventually found the command I'd lost. so I
>> think I'm alright. Thanks...
>
> What does "unable to install" mean? What output/error do you get? I am
> going to assume you get EPERM (Operation not permitted), which would be
> caused by GEOM's "preventive foot-shooting" (keep reading).
>
> Is there some reason you're sticking with the MBR scheme instead of GPT?
I apologize for all of the noise on the list. I failed to mention the
important detail,
which is that I'm working on a sparc64 system, so it's all VTOC8, not MBR nor
GPT.
But as noted, I was able to mount an MBR an accomplish what I'd intended
when booting from a CD-R. Thanks.
- Chris
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