Mounting an old JBOD array with two disks DOS formatted

I have a couple of 500GB disks with data inside that I would like to get back. The two disks were mounted inside a Lacie disk, part of a JBOD array and formatted FAT32. I don't have the external disk electronics anymore, but I have an HP microserver, so I'm trying to temporarily recreate the JBOD array just to get the files, but it seems to fail recognizing one of the disks (sdb). The two disks are mounted inside the microserver. First of all when I launch lsblk I can't see any partition in it, so I can't mount it: nas:~ # lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS sda 8:0 0 465,8G 0 disk ├─sda1 8:1 0 2M 0 part ├─sda2 8:2 0 64M 0 part /boot/efi ├─sda3 8:3 0 2G 0 part [SWAP] └─sda4 8:4 0 463,7G 0 part /mnt3/joe/backup_OMV /mnt2/home /mnt2/ROOT /opt /boot/grub2/i386-pc /home /boot/grub2/x86_64-efi /var /root /usr/local /tmp /srv /.snapshots / sdb 8:16 0 465,8G 0 disk └─sdb1 8:17 0 465,8G 0 part sdc 8:32 0 465,8G 0 disk Then I tried with fdisk to see which filesystem was on the disk. Nothing was showed off: nas:~ # fdisk /dev/sdc -l Disk /dev/sdc: 465,76 GiB, 500107862016 bytes, 976773168 sectors Disk model: SAMSUNG HD501LJ Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes As you see the sdb disk was showed correctly (and if I mount it it gets mounted): nas:~ # fdisk /dev/sdb -l Disk /dev/sdb: 465,76 GiB, 500107862016 bytes, 976773168 sectors Disk model: SAMSUNG HD501LJ Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disklabel type: dos Disk identifier: 0x0001f12c Dispositivo Avvio Start Fine Settori Size Id Tipo /dev/sdb1 * 63 1953536129 1953536067 931,5G b W95 FAT32 I've also tried to follow this guide: https://kb.synology.com/en-us/DSM/tutorial/How_can_I_recover_data_from_my_DiskStation_using_a_PC , but I'm stuck at this command: nas:~ # mdadm -AsfR && vgchange -ay mdadm: No arrays found in config file or automatically Maybe it's a dumb question, but am I missing something? Is there a way to mount the JBOD array without specifying the disk (sdc) partition?