my samsung m3 external hard drive is not showing in 'This PC' but available in 'Eject Samsung M3 portable'

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Hi NORULSHAHLAM BIN MOHSEN,

Welcome to the Microsoft Q&A forum.

Based on the information provided, your Samsung M3 external hard drive is being correctly detected by Windows, which is why it appears under “Eject Samsung M3 Portable.” However, it is not visible in “This PC” because the drive currently does not have a drive letter assigned. Without a drive letter, Windows cannot display the drive in File Explorer.

As Q&A Assist's answer suggested, assigning a drive letter should make the drive immediately accessible:

1. Right‑click Start and select Disk Management
2. Locate the Samsung M3 partition marked as Healthy
3. Right‑click the partition and choose Change Drive Letter and Paths
4. Select Add, choose an available letter, then click OK

Once completed, the drive should appear in This PC right away.

Additional checks that you can try if needed:

• Try reconnecting the drive using a different USB port or cable
• Ensure the drive shows a file system such as NTFS or exFAT in Disk Management
• Avoid selecting Format or Delete to prevent data loss

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The external Samsung M3 drive is detected by Windows (it appears as Disk 2 in Disk Management and in the “Safely Remove Hardware and Eject Media” list) but it doesn’t show in “This PC”. This usually means Windows sees the disk hardware but can’t mount it as a usable volume.

Use these steps to troubleshoot:

1. Check Disk Management status
   • In the screenshot, Disk 2 shows a 16 MB partition and 1863 GB as a single “Healthy (Primary Partition)”.
   • If the partition has no drive letter, assign one:
     1. In Disk Management, right‑click the large partition on Disk 2.
     2. Select “Change Drive Letter and Paths…”.
     3. Click “Add”, choose a drive letter, and click OK.
   • After assigning a letter, check “This PC” again.
2. Check Device Manager for USB/disk issues
   • Right‑click Start > Device Manager.
   • Expand “Disk drives” and “Universal Serial Bus controllers”.
   • If any device shows a warning icon, right‑click it > “Uninstall device”, then on the menu select Action > Scan for hardware changes to reload the driver.
   • If the disk still does not appear correctly, test it on another PC. If it fails there as well, the disk itself may be faulty.
3. If the disk appears intermittently or with errors
   • Treat this as a sign of possible disk failure. Back up any accessible data immediately using another PC or data‑recovery software.
   • Consider replacing the drive if it cannot be made stable.
4. Safely remove when testing
   • When the drive is visible, always use the Safely Remove Hardware and Eject Media icon in the system tray before unplugging to avoid further corruption.

If none of these steps make the drive visible in “This PC” but it continues to show in Disk Management with a primary partition, specialized data‑recovery or disk‑repair tools may be required, or professional data‑recovery service if the data is critical.

References:

• Troubleshoot Disk Management
• Safely remove hardware in Windows