problem with XFS SB magic number

[Ales Komarek <aleaz@xxxxxxxx>]

To whom it may concern,
well I have 2 disks on my machine - one for MS Windows - primary slave 
and other for Linux - primary master (3 partitions; one ext2; 2nd swap 
and third XFS for data) I have installed XOSL (boot manager) on Windows 
HDD and after that during booting pure linux XFS SB magic number error 
occured; I have already uninstalled XOSL, but it did not helped at all;
the should be no physical errors on disk, but when I tried xfs_repair; 
it found secondary Super block but it was corrupted and the program 
ended with an I/O error;
Please is there any way how to correct this?

Yours sincirely Ales Komarek