Reading single disk volume (JBOD) on a computer

Hi again,

Thanks for the answer.

I tried, but I don't manage to mount the volume...

As I am using a laptop, I don't have sata directly accessible, that's why I'm using an external hard drive box, which is correctly detected as USB to SATA bridge

When I connect it, this is what appears (fdisk -l) :

Disque /dev/sdb : 746,5 GiB, 801569726464 octets, 1565565872 secteurs
Unités : sectors of 1 * 512 = 512 octets
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x00000000

Périphérique Amorçage Start        Fin   Secteurs Size Id Type
/dev/sdb1                 1 4294967295 4294967295   2T ee GPT

It's a 3TB HDD, so I'm surprised not seeing anywhere the size, maybe due to JBOD format ?

And then, here are the results of the different commands I tried :

sudo mount -t btrfs -o ro /dev/sdb1 /mnt

>mount: special device /dev/sdb1 does not exist

sudo mount -t btrfs -o ro /dev/sdb /mnt

>mount: wrong fs type, bad option, bad superblock on /dev/sdb,
       missing codepage or helper program, or other error

       In some cases useful info is found in syslog - try
       dmesg | tail or so.

sudo mdadm --examine /dev/sdb --scan
sudo mdadm --examine /dev/sdb1 --scan

(There is no output for boty of those commands)

sudo btrfs device scan /dev/sdb
>Scanning for Btrfs filesystems in '/dev/sdb'
>ERROR: device scan failed '/dev/sdb' - Invalid argument
sudo btrfs device scan /dev/sdb1
>ERROR: not a block device: /dev/sdb1

I'm not a linux expert (far from that) and I don't find enough information of how to do it on Internet.

Maybe someone has an idea of what has to be done, or of what I'm doing wrong ?

Thanks in advance for all help !