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The hd6 device is too old and should not be trusted as part of this zpool 
The hd7 device is too old and should not be trusted as part of this zpool 
The hd10 device is too old and should not be trusted as part of this zpool 
The hd6 device is too old and should not be trusted as part of this zpool 
The hd7 device is too old and should not be trusted as part of this zpool 
The hd10 device is too old and should not be trusted as part of this zpool 
error: no such device: 4da30f9c2bb5aea6. 
Entering rescue mode... 
grub rescue>