Jellyfin Cannot Access an External USB Drive on Ubuntu

Quick answer

If Jellyfin cannot access an external USB drive, first confirm where Ubuntu mounted it:

lsblk -f
findmnt

Then test the actual path as the Jellyfin user:

sudo -u jellyfin ls -la /mnt/media

If that returns Permission denied, the fix depends on the filesystem type. ext4 normally works well with ACLs. NTFS and exFAT often require the correct mount options in /etc/fstab.

Step 1: Find the drive and filesystem

Run:

lsblk -f

Look for:

• device name
• filesystem type
• UUID
• mount point

Example:

sdb1  ext4  1234-ABCD  /mnt/media

Do not assume the path is /media/username/DriveName. Desktop auto-mount paths can change and may not be suitable for a server.

Step 2: Confirm the drive is mounted

Run:

findmnt /mnt/media
ls -la /mnt/media

If findmnt shows nothing, Jellyfin is not looking at the real USB disk.

A stable server mount such as /mnt/media or /srv/media is easier to maintain.

Step 3: Test access as Jellyfin

sudo -u jellyfin ls -la /mnt/media
sudo -u jellyfin find /mnt/media -maxdepth 2 -type f | head -20

Possible results:

• files listed: permissions are probably fine
• permission denied: fix access
• empty folder: the disk may not be mounted

Use namei to inspect the full path:

namei -l /mnt/media/movies

Step 4: Fix ext4 permissions

For ext4, ACLs are usually the cleanest option:

sudo apt install -y acl
sudo setfacl -R -m u:jellyfin:rx /mnt/media
sudo setfacl -R -d -m u:jellyfin:rx /mnt/media
sudo systemctl restart jellyfin

Verify:

getfacl /mnt/media
sudo -u jellyfin ls -la /mnt/media

Step 5: Fix NTFS or exFAT mounts

NTFS and exFAT permissions are often controlled by mount options rather than normal Linux ACLs.

Check the current options:

findmnt -no SOURCE,FSTYPE,OPTIONS /mnt/media

Find the Jellyfin group ID:

id jellyfin

An /etc/fstab entry may need options such as:

uid=
gid=
umask=
fmask=
dmask=

The exact values depend on which user or group should manage the files.

Test changes with:

sudo mount -a

Do not reboot until mount -a completes without errors.

Step 6: Make the mount persistent

Find the UUID:

lsblk -f

Create a stable mount point:

sudo mkdir -p /mnt/media

Back up and edit fstab:

sudo cp /etc/fstab /etc/fstab.backup
sudo nano /etc/fstab

Example ext4 entry:

UUID=YOUR-UUID /mnt/media ext4 defaults,nofail 0 2

Then test:

sudo mount -a
findmnt /mnt/media

Step 7: Add the correct path in Jellyfin

In Jellyfin, open:

Dashboard → Libraries → Manage folders

Add the stable Linux path, for example:

/mnt/media/movies
/mnt/media/tv

Avoid using a temporary desktop auto-mount path.

Step 8: Reboot and verify

sudo reboot

After reconnecting:

findmnt /mnt/media
sudo -u jellyfin ls -la /mnt/media
systemctl status jellyfin --no-pager

If the library disappears after reboot, use Jellyfin Media Disappears After Reboot.

Related guides

• Give Jellyfin Access to Media Folders on Ubuntu
• Jellyfin Media Disappears After Reboot
• Jellyfin Library Not Showing Files
• Install Jellyfin on Ubuntu

Recap

Find the real mount point, identify the filesystem, test access as the jellyfin user, and make the mount persistent.

Use ACLs for ext4. Use appropriate mount options for NTFS or exFAT.