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Participant
September 20, 2026
Question

Retaining external drive letters on different USB sockets

  • September 20, 2026
  • 2 replies
  • 37 views

I have more external USB drives than USB sockets on my PC.  This requires me to occasionally swap the main USB drive holding my RAW files to another socket or to reconnect after it has been removed. Lightroom often doesn’t recognize that it is the same drive and allocates a new drive letter, consequently it says files not found and I have to re-sync all of the files which loses the history of which files have been edited.  Could you have Lightroom recognize the drive and allocate it the original drive letter and retain it even after removal.

    2 replies

    Per Berntsen
    Community Expert
    Community Expert
    September 20, 2026

    Drive letters are managed by Windows – not Lightroom Classic.
    When an external drive is connected to your computer, Windows will assign the first unused drive letter in the alphabet. The next time you connect this drive, the first unused letter may be a different one, so the drive letter will change.

    You can prevent this from happening by assigning a letter towards the end of the alphabet to your main external drive. If you choose Y or Z, you can probably be certain that it will never change.
    In the File Explorer, right click This PC, choose Manage, then choose Disk Management, right click the drive, and choose Change drive letter and paths.
     



     

     

    Participant
    September 21, 2026

    Thank you for this, I was aware it was a MS issue with drive letter changes but had envisaged that Lightroom could use more than the drive letter to check the drive, i.e. look at the drive meta data.  If that is not the case then the advice to rename the drives at the end of the alphabet is sound and i will follow it.  Cheers.