How? Get a second drive of equal or greater capacity. You're using a 4TB external drive with a 128GB internal drive meaning that 4TB drive is your 'main drive' for at least your Lightroom work. How will you know which is the problem? You won't until you remove the drive and connect it to a known working USB to SATA enclosure/cable. If the USB enclosure has failed, you can salvage the situation by removing the drive and putting it into a different enclosure or connecting it with a USB to SATA cable (see the linked post for details). If it's the drive that failed, your only option is to send it in for recovery. Remove the drive from the WD enclosure and use a different enclosure/cable to test the drive.īasically, you have to go through the process of elimination to figure out what your next steps are, if any. When using diskutil list, these are my results Cristians-MacBook-Pro:~ cristianmanuel$Ģ: Apple_CoreStorage Macintosh HD 20.5 GB disk0s2ģ: Apple_Boot Recovery HD 650.0 MB disk0s3Ġ: Apple_HFS Macintosh HD +120.1 GB disk1
Updating boot support partitions for the volume as required. When trying First Aid, I always get these results: Repairing file system. It shows up in Terminal and Disk Utility, however it is unable to mount.
So my WD External Hard Drive wasn't ejected properly.
