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Subject: Re: GPT header checksum mismatch
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To: Greg Balfour <greg.bal4@gmail.com>, freebsd-questions@freebsd.org
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On 29/03/2022 15:45, Greg Balfour wrote:
> Running 12.3-RELEASE I had a UPS failure and my machine did a reboot
> without properly shutting down.  Now when it boots I see this
> message:
> 
> gptboot: backup GPT header checksum mismatch
> 
> Doing a "gpart show ada0" shows
> 
> 34  976773101  ada0  GPT  (466G) [CORRUPT]
> 
> The machine still boots fine.  I don't have a prior dump of the
> partition table saved.  How can I clean up these errors?
> 

Try gpart recover.

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