Hard Drive Docking Station Setup Guide for Ubuntu Linux

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📄 Author: Ouail Zakary

• 📧 Email: Ouail.Zakary@oulu.fi
• 🔗 ORCID: 0000-0002-7793-3306
• 🌐 Website: cc.oulu.fi/~nmrwww/members/Ouail_Zakary.html
• 📁 Personal Website: ozakary.github.io

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This guide explains how to set up and use hard drives with a USB docking station on Ubuntu Linux. This process was tested with a dual-bay hard drive docking station and two 4TB Seagate drives.

Table of Contents

• Overview
• Hardware Setup
• Initial Detection
• Common Issues
• Setting Up a New Drive
• Final Verification
• Daily Usage
• Troubleshooting

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Overview

What you need:

• Hard drive docking station with USB connection
• One or more hard drives (SATA)
• Ubuntu Linux system (tested on Ubuntu 22.04)
• Administrator (sudo) access

What this does NOT require:

• The "cloning" feature mentioned in the docking station manual is OPTIONAL and NOT needed for normal storage use
• You only need cloning if you want to duplicate one drive to another

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Hardware Setup

Step 1: Connect the Docking Station

1. Connect the USB cable from the docking station to your laptop
2. Insert your hard drive(s) into the docking station slots (HDD A and/or HDD B)
3. Connect the AC/DC power adapter to the docking station and wall socket
4. The drives should power on (you may see indicator lights)

Important: Do NOT use the cloning feature unless you specifically want to duplicate one drive to another. For normal storage use, just connect and use the drives.

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Initial Detection

Check if Linux Detects Your Drive(s)

Open a terminal and run:

lsblk

What to look for:

• New devices named sdb, sdc, sdd, etc. (depends on what's already connected)
• The size should match your hard drive capacity (e.g., 3.6T for a 4TB drive)

Example output:

NAME          SIZE TYPE MOUNTPOINT
sda         931.5G disk 
└─sda1      931.5G part /media/user/existing_drive
sdc           3.6T disk                              ← New 4TB drive
nvme0n1     953.9G disk 
├─nvme0n1p1   512M part /boot/efi
└─nvme0n1p2   953G part /

Check for Existing Data or RAID Configuration

sudo fdisk -l /dev/sdc

Replace sdc with your actual device name.

If you see partitions listed, the drive may have data. If you see "RAID" or "md" devices, see the RAID Cleanup section below.

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Common Issues

Issue: Drive Shows RAID Configuration

If your drive was previously used in a RAID array (common with enterprise drives), you'll see inactive RAID devices:

cat /proc/mdstat

Example problematic output:

md126 : inactive sdc[0]
      3906469888 blocks super external:/md127/1

Solution: See the RAID Cleanup section below.

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Setting Up a New Drive

This section covers setting up a drive from scratch (or after wiping an existing drive).

RAID Cleanup (if applicable)

If the drive has RAID metadata, clean it up first:

# Stop any inactive RAID arrays
sudo mdadm --stop /dev/md126
sudo mdadm --stop /dev/md127

# Wipe RAID metadata from the drive
sudo mdadm --zero-superblock /dev/sdc

Replace sdc with your actual device name.

Step 1: Create a Partition Table

sudo fdisk /dev/sdc

In the fdisk prompt, type these commands:

1. Type g and press Enter (creates GPT partition table - required for drives >2TB)
2. Type n and press Enter (creates new partition)
3. Press Enter (accept default partition number)
4. Press Enter (accept default first sector)
5. Press Enter (accept default last sector - uses entire disk)
6. Type w and press Enter (write changes and exit)

Expected output:

Created a new GPT disklabel (GUID: ...)
Created a new partition 1 of type 'Linux filesystem' and of size 3.6 TiB.
The partition table has been altered.

Step 2: Format the Partition

sudo mkfs.ext4 /dev/sdc1

Note: This will take a few minutes for large drives. You'll see progress messages.

Expected output:

Creating filesystem with 976754385 4k blocks and 244195328 inodes
Filesystem UUID: 8a84db63-36b2-44ec-8e68-8a3d6b47e3bb
...
Writing inode tables: done
Creating journal: done
Writing superblocks and filesystem accounting information: done

Step 3: Let Ubuntu Auto-Mount the Drive

After formatting, safely remove and re-plug the USB cable. Ubuntu will automatically detect and mount the drive with its UUID as the folder name.

Check where it's mounted:

lsblk

You should see something like:

sdc           3.6T disk 
└─sdc1        3.6T part /media/username/8a84db63-36b2-44ec-8e68-8a3d6b47e3bb

Step 4: Create Friendly Shortcuts (Optional but Recommended)

The UUID names are long and hard to remember. Create symbolic links for easier access:

# For the first drive
ln -s /media/username/8a84db63-36b2-44ec-8e68-8a3d6b47e3bb ~/hdd1

# For the second drive (if you have one)
ln -s /media/username/3fda220b-c107-4b75-97bc-05e5c3a5335c ~/hdd2

Replace:

• username with your actual Ubuntu username
• The UUID strings with the actual UUIDs from your lsblk output

Now you can access your drives as ~/hdd1 and ~/hdd2!

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Final Verification

Test Drive Access

# Test writing to the drive
echo "Test file" > ~/hdd1/test.txt

# Test reading from the drive
cat ~/hdd1/test.txt

# Check available space
df -h ~/hdd1

Expected output:

Test file
Filesystem      Size  Used Avail Use% Mounted on
/dev/sdc1       3.6T   36K  3.4T   1% /media/username/...

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Daily Usage

Accessing Your Drives

Simply use the shortcuts you created:

# Copy files to the drive
cp my_data.tar.gz ~/hdd1/

# List files on the drive
ls ~/hdd1/

# Check disk usage
df -h ~/hdd1

Safely Removing Drives

Always safely eject before unplugging:

1. GUI method: Right-click the drive icon and select "Safely Remove" or "Eject"

2. Command line method:

   # Unmount the drive
   sudo umount ~/hdd1
   
   # Or unmount by device
   sudo umount /dev/sdc1

3. Wait for the command to complete

4. Unplug the USB cable or power off the docking station

Re-connecting Drives

When you plug the drives back in:

• Ubuntu will auto-mount them with the same UUID names
• Your symbolic links (~/hdd1, ~/hdd2) will work automatically
• The device names (sdc, sdd) may change, but the mount points stay consistent

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Troubleshooting

Drive Not Detected

Check physical connections:

lsusb  # Should show the docking station
dmesg | tail -30  # Check for USB device messages

Check if drive is detected but not mounted:

lsblk
sudo fdisk -l

I/O Error When Accessing Drive

This usually means the drive connection was interrupted. Try:

# Unmount the problematic drive
sudo umount /media/username/UUID-name

# Check dmesg for errors
sudo dmesg | tail -50 | grep error

# Safely remove and re-plug the USB cable
# The drive should re-mount automatically

Device Name Changed After Reboot

This is normal! Device names (sdc, sdd) can change between boots or when you unplug/replug drives. This is why we use:

• UUID-based mount points (handled automatically by Ubuntu)
• Symbolic links (~/hdd1) for easy access

Your data is safe - only the device name changed, not the actual drive.

Drive Shows as "Read-Only"

Check ownership and permissions:

ls -la /media/username/UUID-name/

# If owned by root, change ownership
sudo chown username:users /media/username/UUID-name/

Replace username with your actual username. You can check your username with:

whoami
id

Multiple Drives in Docking Station

If using both bays in a dual-bay docking station:

• Each drive appears as a separate device (sdc, sdd, etc.)
• Each gets its own UUID-based mount point
• Create separate shortcuts for each: ~/hdd1, ~/hdd2, etc.
• You can access both drives simultaneously

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Useful Commands Reference

Check all drives and their mount points:

lsblk
df -h | grep -v loop

Check drive health (requires smartmontools):

sudo apt install smartmontools
sudo smartctl -a /dev/sdc

See what's using a drive:

lsof +D ~/hdd1

Check disk usage:

du -sh ~/hdd1/*  # Size of each folder/file
df -h ~/hdd1     # Total space used/available

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Summary

Quick setup for new drives:

1. Connect docking station hardware
2. Check detection: lsblk
3. Clean RAID if needed: sudo mdadm --zero-superblock /dev/sdc
4. Partition: sudo fdisk /dev/sdc → g, n, Enter×3, w
5. Format: sudo mkfs.ext4 /dev/sdc1
6. Unplug and re-plug USB (Ubuntu auto-mounts)
7. Create shortcut: ln -s /media/username/UUID ~/hdd1
8. Test: echo "test" > ~/hdd1/test.txt

Daily usage:

• Access via ~/hdd1 and ~/hdd2
• Always safely eject before unplugging
• UUID names stay consistent across reboots

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Notes

• Tested with Ubuntu 22.04 LTS
• Works with dual-bay USB 3.0 docking stations
• Suitable for 4TB Seagate ST4000NM drives (and other large drives)
• UUID-based mounting ensures consistency across reboots
• No need to use the docking station's "cloning" feature for normal storage use

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For further details, please refer to the respective folders or contact the author via the provided email.