To sum up there are lots of potential solutions for a mac not reading an external hard drive.
Lacie rugged external hard drive not showing up mac.
Hard drives usb 3 0 drive mobile drive rugged.
If you have followed all of these steps and the drive is still not recognized shut down your computer wait 3 to 5 minutes restart your computer and try again.
If the lacie setup assistant is not provided on the drive depending on the model your hard drive is formatted mac extended hfs windows fat32 or windows ntfs.
Some lacie drives now ship with the lacie setup assistant installed.
As an external harddrive it has worked just fine with no fuss.
Finally if your drive is online and formatted but doesn t show a drive letter next to its name right click the volume and choose change drive letter and paths to add a drive letter.
The lacie setup assistant will automatically prepare your lacie hard drive for use on your system.
Don t worry the next guide we will show you the best solution to fix the hard drive not recognized problem.
How to fix external hard drive not recognized.
Only use certified interface cables such as the cables provided with your lacie drive.
While the external hard drive connected to the windows computer or mac and the device did not show up.
If we were to pick one disk drill seems to be the most well rounded offering plenty of customizations and power in an easy to use interface.
I regularly clean and defragment it and also have it checked out for viruses malware etc.
Lacie external hard drive not recognized on mac but recognized on pc i just got both a macbook pro and a lacie 1tb rugged safe external hard drive just a few days ago.