- Dec 6, 2015
- Lightroom Experience
I am using Lightroom 6 or CC and have a Firewire external hard drive with my photos and catalogues on it. My computer is an iMac 27 running El Capitan. When I quite Lightroom and then try to eject/unmount the external hard drive the system is unable to eject it and says that some program is using Lightroom so it can't be ejected.