My motherboard died, so I had to replace it, including the OS.So I boot first time, do mdadm --assemble --scan, raid assembled without any issues. I share the drive, reboot. Then it stops recognizing it.cat /proc/mdstat Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] md127 : inactive sdb[4](S)      1953511512 blocks super 1.2unused devices: <none>The disks are as follows (sdb, sdc, sdd):Why did it work the first time, then stopped working all of a sudden?If I try to force them, it doesnt work:sudo mdadm --assemble --force /dev/md127 /dev/sdb /dev/sdc /dev/sddmdadm: /dev/sdb is busy - skippingmdadm: no recogniseable superblock on /dev/sdcmdadm: /dev/sdc has no superblock - assembly abortedAny ideas?
mdadm assembling array issues
ubuntu;raid;mdadm