Hi linux-xfs mailinglist, I've recently subscribed to this list. I've seen many messages, but have little understading of the 'XFS' file system. I know about mkfs.xfs. I've benched my hardware. But, now my harddrive had a collision with the mbr somehow. [or something] But, now I've 'hexdumped', the first 512 bytes, [because after a disaterous reboot, cfdisk is now saying; "/dev/sda empty". I'm aware of two primary and two logical partitions. I feel that I know the size of the first and second primary, but the xfs/ sda5 and, xfs sda6, are no longer appearing. I had to '#' the /etc/fstab, because it won't boot [long waiting]. Now I would like to restore the first 512 bytes which is the MBR. I have absolutely no understanding of -where-, "the SuperBlock" [or how that should be called], happens to be. But, I feel that 512 bytes missing and no reason to believe a whole Terabyte would be "ones and/ or zero's", now, I wonder, how to restore this. I have not made backup of this harddrive, just an rsync, which is a little outdated and a bit incomplete, because difference in size of both drives. I might be able to create a XFS-something [from /dev/sda, for example], and write that with dd. But, before I would 'try this out', I would like to gain some understanding, of what -should- be on the first 512 bytes of a harddrive, besides what I have now, cfdisk is saying empty. Hoping to receive a reply, Richard, the Netherlands -- To unsubscribe from this list: send the line "unsubscribe linux-xfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html