> Disk by-uuid
> 15D8A01C886F9F69                     points to ../../sdh1
> 1894178394176294                     points to ../../sdi1
> aba413da-672d-4dfa-ab06-c43303a488ab points to ../../sda1
> d2005a76-5478-4e53-ab2d-c3ddb84cf56e points to ../../sda5
> ****************
> My comments
>  Starting on Linux HDD, everything from grub menu is correct, except boot 
> with 
> Windows 7, which gives only : "reading file error, ctrl alt del to reboot".
> My BIOS allows me to choose HDD for booting. Booting directly on Windows 7 
> HDD 
> is normal.
> grub.cfg has been built by grub-mkconfig without only one modification about 
> duration of timeout.
> I'm surprised that value of uuid is the same for Windows XP and Windows 7.
>   
This is exactly the problem. UUIDs must be unique. And it doesn't seem
to be GRUB misdetection since there is no by-uuid entry pointing to
sdg1. The cause of UUID collision is usually if one copies partition
without regenerating UUID. Another possible reason is a buggy formatting
tool. You need to fix the UUID collision and then rerun update-grub.

-- 
Regards
Vladimir 'φ-coder/phcoder' Serbinenko


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