FreeBSD 9 "gptboot: invalid backup GPT header" error (boots fine though)

Adam Strohl adams-freebsd at
Wed May 2 09:03:48 UTC 2012

Thanks Andrey,

I've just recompiled /boot/gptboot after updating gpt.c and installed it 

gpart bootcode -p /boot/gptboot -i 1 da0

I still see "gptboot: invalid backup GPT header" on boot (but it does 
still boot).

On 5/2/2012 12:58, Andrey V. Elsukov wrote:
> On 30.04.2012 23:14, Adam Strohl wrote:
>> da0 at tws0 bus 0 scbus0 target 0 lun 0
>> da0:<LSI 9750-8i    DISK 5.12>  Fixed Direct Access SCSI-5 device
>> da0: 6000.000MB/s transfers
>> da0: 2860992MB (5859311616 512 byte sectors: 255H 63S/T 364725C)
>> Let me know anyone wants to see anything else/has seen this/has any theories!
> Can you try patch from the r234693, update and reinstall gptboot, does it help?

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