[Migrating from dsm 6.4 to dsm 7.1]

Hi I'm having trouble with the recovering and mounting of the raid0 array disk 1,2&3 disk 3 is connected to the Intel SATA controller on board asrock  imb1213 and disk 4,5,6,7 is connected to a add in mini pcie marvel card, Disk 3 is a m2 ngff so I accidentally let it initialised on the first startup of dsm 7.1 now the system doesn't put the raid0 together is there a way to solve this issue with Ubuntu startup usb

[Raid 5 btrfs - cannot mount]

Hi  I'm having trouble with the recovering and mounting of the raid0 array in Ubuntu  

Sda & sdb & sdc is one raid volume md2 and.     Sdd & sde is another raid md3.... I seemed to get the error of wrong fs type, bad option bad superblock and how do I get initialize the drives 1and 2 and 3

[Trouble installing DSM 7.x]

 have done the USB loader disk, now my computer stops at this screen