Hi List, we have a server, setuped with a raid 6 with 24 drives. After a reboot the system doesnt recognized our software raid device /dev/md1 With mdadm i could get and preserve information about the drives and super block information: mdadm --examine /dev/sda /dev/sd[d-z] >> raid.status Also the /dev/md1 was recognized with mdadm --examine --brief --scan --config=partitions which doesnt give any results right now. I have read some sites like this: https://superuser.com/questions/1078393/linux-mdadm-does-not-assemble-array-but-recreation-of-array-does-it and https://www.computerbase.de/forum/threads/ubuntu-sw-raid5-reassemble.1526335/ to recreate raid and preserve the data on the disks. I dont know the risk to create the raid again without loosing data. Our customer doesnt have a backup. I have also read to preserve data on disk with dd to other disks before try to repair something. What way do you prefer or what further information do you need? Best regards, Volker
