Actually,
00001f0: 0000 0000 0000 0000 0000 0000 0000 55aa ..............U.
It's the MBR signature (the 55aa above) that causes problem. If I replace it with "0000", blkid sees it as a LVM member again but the system doesn't boot as its not recognised as a boot sector.
Actually,
00001f0: 0000 0000 0000 0000 0000 0000 0000 55aa ..............U.
It's the MBR signature (the 55aa above) that causes problem. If I replace it with "0000", blkid sees it as a LVM member again but the system doesn't boot as its not recognised as a boot sector.