我在 Linux Mint 19 安装中有一个完好的软件 RAID (md0)。我更换了主板，使用与以前完全相同的驱动器。但是，现在 RAID 不存在并且无法组装。
# mdadm --detail /dev/md0
mdadm: cannot open /dev/md0: No such file or directory
# cat /proc/mdstat
Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10]
unused devices: <none>
# mdadm --examine /dev/sdc
/dev/sdc:
MBR Magic : aa55
Partition[0] : 4294967295 sectors at 1 (type ee)
# mdadm --examine /dev/sdd
/dev/sdd:
MBR Magic : aa55
Partition[0] : 4294967295 sectors at 1 (type ee)
从硬件角度来看，驱动器似乎没有问题（sdc 和 sdd），但是 fdisk 显示 sdd 没有分区？
Disk /dev/sdc: 3.7 TiB, 4000787030016 bytes, 7814037168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: 8735B481-9712-4066-A16C-ABA9C9E23422
Device Start End Sectors Size Type
/dev/sdc1 2048 7814035455 7814033408 3.7T Linux filesystem
Disk /dev/sdd: 3.7 TiB, 4000787030016 bytes, 7814037168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: 948195E0-E97D-4693-8698-E808146423FA