Home > Questions

Can't eject external hard disk on Mac with photos library on it

I store my photo library on an external hard drive. However, I can't eject it normally, as I always receive a message stating that the drive might be in use by an application. Upon checking with lsof command in Terminal, I found out that an app named "photolibr" is using the volume even when the Photos app is not running. Fortunately, using Force Eject seems to work without causing any apparent damage to the photo library. But I'd like to know why and how to eject the disk without forcing it every time.

Best Answered by

iBoysoft author Jenny Zeng

Jenny Zeng

Answered on Friday, June 14, 2024

The System Photo Library is always in use when you are singed into your user account. Even if you have quitted the Photos app, there are likely still background processes like AMPLibraryAgent or photolibraryd accessing it.

So, if your System Photo Library is on the external hard drive, you'll have a hard time ejecting the disk. 

The solution is to stop the processes from using your photos library. There are two ways to do it without force ejecting your disk:

① You can quit the background processes in Activity Monitor.

  1. Ensure that the Photos app is quitted.
  2. Open Terminal and run the following command to see the processes that are using your drive. (type lsof, leave a space, then drag and drop your disk partition into Terminal and hit Enter.)lsof /Volumes/drive_name
  3. Launch Activity Monitor, find these processes, right click on one and select Quit.
  4. Retry ejecting your drive after the processes are closed.

② You can create a new library and use it as the System Photo Library.

  1. Press and hold the Option key, then open Photos.
  2. Release the key after seeing the "Choose Library" window.
  3. Click "Create New" to generate a new, empty library folder.
  4. After Photos is open, click Photos > Preferences/Settings from the menu bar.
  5. In the General tab, click "Use as System Photo Library."
  6. Eject your external drive again.

The next time you want to open the photos library on your external drive in Photos, you can repeat step 1 and 2 to select it.

If you want to learn more ways to resolve the issue when you can't eject an external drive on Mac, read this guide: How to Safely/Force Eject External Hard Drive on Mac?

 

People Also Ask

Read More Questions

Read More Advice From iBoysoft's Computer Experts

Instalar apt get en Mac

Instalar Apt-get en Mac: posibilidades y mejor equivalente

Explicar si puedes instalar apt-get en Mac, la razón detrás del error 'apt-get command not found' y el mejor equivalente a apt-get para macOS.

mds stores on Mac

What Is Mds_stores on Mac | Fix Mds_stores High CPU

Introduce what mds_stores on Mac is and how to fix mds_stores consuming high CPU on Mac. Tell you how to stop mds_stores on Mac.

Wiki Tips

So überprüfen Sie, ob Ihr Mac Apple Silicon verwendet

[Gelöst] Zulassen, dass Zubehör nicht angezeigt wird, um sich mit dem Mac zu verbinden

Dieser Artikel erklärt, warum der Mac zulässt, dass Zubehör nicht angezeigt wird, um sich unter macOS Ventura/Sonoma zu verbinden, und wie Sie Ihren Mac schützen, indem Sie die USB-Anschlüsse deaktivieren.