Lacie External Hard Drive – Setup Instructions For Macintosh

I had a recent customer request for their Lacie 5 Terabyte external hard drive. They needed assistance using this device on their Macintosh computer. Here is their initial request:

Just bought a Lacie 5 terabyte backup since my last Seagate is now full. I have an iMac and have 2 USB C and A. What next and how do I download this drive to my computer?

This individual was using a Macintosh with High Sierra 10.13.4 operating system. They had not yet plugged in this device. They also asked which USB connection to use.

By the time I responded to their request, they had already connected their Lacie 5 terabyte hard drive via USB type A connection. Generally, USB type C is faster and newer. However, it depends on what type connection your device supports.

Here is my response to their request. You can hook it up to the USB type C. Also, you will need to format that hard drive before you use it on you iMac.

Here are the instructions to format that hard drive. You want to use the “Finder”. Select “Go” and then “Utilities”.

Choose “Disk Utility”. In Disk Utility, select the hard drive you want to format. Make certain that you select the correct external hard drive.

You do NOT want to accidentally format your hard drive that has Macintosh operating system installed on. Click on the “Erase” tab from the top menu. Under the “Volume Format” drop down menu, you want to choose “Mac OS Extended (Journaled)”.

Type in a name for your external hard drive. Finally, click on the “Erase…” button down below. Your Lacie 5 terabyte hard drive is now ready to use on your Macintosh computer.

These instructions were written for a Macintosh computer with High Sierra 10.13.4 operating system. However, they can be used as basis points for other Macintosh operating systems. Finally, I will give you a bonus tip.

This individual wanted me to also reconfigure their new Lacie 5 terabyte external hard drive with Time Machine. Time Machine is the default backups software that comes with Macintosh operating system. Their existing Seagate external hard drive was one terabyte in size.

However, when I checked on free space for this device, it appeared as being full. It is quite easy to change the device that Time Machine backs data up to. You want to go into Time Machine.

I would NOT change your destination disk while Time Machine is backing up data. It might not even allow you to make this change, but I would NOT even attempt it. Once time machine is no longer active backing up data, go ahead and change the destination location.

You can either open Time Machine from the menu bar above or go to “System Preferences” from the Apple menu. Look for the Apple icon in the top menu. Once in Time Machine look for “Select Backup Disk…” and click on it.

You will be given a list of hard drives available. In this real world example choose the external hard drive. Click on “Use Disk”. Since this will be the first time that you are backing up to a different external hard drive, then depending on how much data you have chosen, it can take quite a few hours for this data to get backed.

Time Machine will tell you when a backup completed successfully or not. You can use these instructions for any external device supported by Macintosh operating system.