If your JBOD volume is showing as "Unallocated" or "RAW," follow this workflow:
is arguably the most famous portable tool for fixing partition tables. Since JBOD relies heavily on the partition map to link disks together, TestDisk is essential.
This keyword suggests you are looking for software to troubleshoot or recover data from a (Just a Bunch of Disks) storage setup. Because JBOD doesn't have the redundancy of RAID, a single drive failure can be a nightmare.