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Troubleshooting External Hard Drive Not Detected in Windows

Issue Description 

External drives may not appear in File Explorer even when connected. 

Common Causes 

  • USB power issues 
  • Drive letter conflicts 
  • Uninitialized disks 

Step-by-Step Solution 

Step 1: Check Disk Management 

  • Right-click Start → Disk Management 
  • Look for the external disk 

 

Step 2: Assign Drive Letter 

  • Right-click the disk → Change Drive Letter and Paths 
  • Click Add → Choose a letter → OK 

 

Step 3: Initialize Disk (If Needed) 

  • Right-click disk → Initialize 
  • Choose GPT (recommended) 

️ Initializing erases data 

 

Step 4: Test Hardware 

  • Try a different USB port and cable 
  • Test on another PC 

Explore Further 

  • Use manufacturer diagnostics 
  • Run disk repair tools 

Prevention & Best Practices 

Always safely eject drives.