>{ Convention on kernel.org is to reply-to-all, trim unneeded quoted material, and bottom post or interleave. Please do so. } Yes. thank you. >Grub1 needs its boot partitions to use v0.90 or v1.0 superblocks. Grub2 needs the md module in its core to boot from v1.1 or v1.2 superblocks. >Anyways, because the content of a v1.2 array does not start at the beginning of the member devices, stupid grub doesn't connect sd[abc]1 with your /boot mount >and therefore delivers 'null'. >And then doesn't know how to link the core together. can't say I understand all that but does this mean the server can't boot from the replacement drive? -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html