Geom not found, disaster recovery plan on FREEBSD 7.2 STABLE

[Ivan Voras]

2009/12/18 Jeronimo Calvo <jeronimocalvop at googlemail.com>:
> Hi, how can i change that value on the MBR?

You can try reading this:

http://www.freebsd.org/cgi/man.cgi?fdisk

Search for "active slice".


> 2009/12/18 Ivan Voras <ivoras at freebsd.org>:
>> Jeronimo Calvo wrote:
>>>
>>> Ho folks,
>>>
>>> As a plan for a recovery planing due to a crash on a kernel Update,
>>> when restarted I used to have F1 Freebsd and F2 Other, I choosed F2
>>> wich seems to belong to an old linux installation and a Grub-error pop
>>> up, after restarting again, Freebsd completly dissapear booting just
>>> that Old-Crashed GRUB plan...
>>>
>>> On an attempt to recover the normal behaviour I tried booting from a
>>> Livecd and restore the freebsd boot loader MBR on my first disk doing:
>>>
>>> Fixit# fdisk -B -b /boot/boot0 ad8
>>>
>>> seems to write the MBR but when is asking to overwrite the partition
>>> table it is giving me an error:
>>>
>>> Geom not found...
>>>
>>> I tried several times, as well as using "fdisk -BI ad8" wich gives me
>>> the same error...
>>
>> This particular error in your particular circumstances can be ignored.
>>
>> I think the old loader (GRUB) simply changed the "active" partition index in
>> the MBR, you don't need to reinstall the boot loader - change the active
>> parition.
>>
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>
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