So, you just bought an external hard drive or a portable SSD and wanted to use it on your Mac. But somehow, macOS doesn’t allow you to write data to the drive.
That’s all because it’s been initialized with Windows NT File System (NTFS), which is primarily for PCs. Apple Mac machines support a different file system.
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In this post, I’m going to show you how to format your external drive for a Mac compatible file system i.e. Mac OS Extended (Journaled). Just follow this easy step-by-step guide and you’re all set.
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Important note: If you have useful files stored on the external drive, be sure to copy or transfer them to another safe place prior to formatting. The operation will erase all data and your files will be gone for good. You could use a recovery program like Data Rescue to retrieve them, but the odds of recovery vary.
Pro tip: If your external drive has a large volume, like mine – a 2TB Seagate Expansion. I highly recommend you also create multiple partitions. I’ll also show you how to do that below.
Most External Hard Drives Are Initiated with NTFS
During the last several years, I’ve used several removable drives, including a 500GB WD My Passport, 32GB Lexar flash drive, and a few others.
Three weeks ago, I bought a brand new 2TB Seagate Expansion to backup my MacBook Pro before I updated to the latest macOS, 10.13 High Sierra (also see those High Sierra issues I encountered).
When I connected the Seagate to my Mac, the drive icon showed up like this.
When I opened it, the default content was all there. Since I wanted to use it on Mac, I clicked the blue logo with the text “Start_Here-Mac”.
It brought me to a webpage on Seagate’s site, where it clearly indicated the drive was initially set up to work with a Windows PC. If I wanted to use it with Mac OS or Time Machine backup (which is my intent), I’ll need to format the drive for my Mac.
I then right-clicked the external drive icon on Mac desktop > Get Info. It showed this format:
Format: Windows NT File System (NTFS)
What is NTFS? I’m not going to explain here; you can read more on Wikipedia. The problem is that on macOS, you can’t work with files saved on an NTFS drive unless you use a paid app Paragon NTFS for Mac.
How to Format an External Drive to Work with Mac (from NTFS to Mac OS Extended)?
Note: The tutorial and screenshots below are based on macOS Sierra 10.12.5. They might be different if your Mac has a different version.
Step 1: Open Disk Utility.
The quickest way to do this is a simple Spotlight search (click the search icon on the upper right corner), or go to Applications > Utilities > Disk Utility.
Step 2: Highlight your external drive and click “Erase”.
Make sure your drive is connected. It should show up on the left panel under “External”. Select that disk and click the “Erase” button, the one highlighted in red in the screenshot below.
Step 3: Select “Mac OS Extended (Journaled)” in Format.
A new window will pop up asking which file system you’d like to format the external drive to. By default, it’s the Windows NT File System (NTFS). Select the one shown below.
Pro tip: If you want to use the external drive for both Mac and PC, you can also select “ExFAT”. Learn more about the differences between these file systems from this thread.
By the way, you can also rename your external drive.
Step 4: Wait until the erasing process is complete.
For me, it took less than a minute to format my 2TB Seagate Expansion.
You can also check to see if the format was successful. Right-click on the icon for your external drive on Mac desktop, then select “Get Info”. Under “Format”, you should see text like this:
Congratulations! Now your external drive has been formatted to be fully compatible with Apple MacOS, and you can edit, read, and write files to it as you want.
How to Partition an External Hard Drive on Mac
If you want to create multiple partitions on your external hard drive (in fact, you should for better file organization), here’s a step-by-step guide:
Step 1: Highlight your drive and click “Partition” in Disk Utility.
Open the Disk Utility app and highlight your external hard drive. Make sure you select the disk icon right under “External”. If you select the one below it, the Partition option will be greyed out and become unclickable.
Step 2: Add partitions and allocate volume for each one.
After clicking “Partition”, you’ll see this window. Located on the left is a big blue circle with the name of your external drive together with its volume size. What you need to do next is click the add “+” button to increase the number of partitions on your external disk. Then allocate the desired volume to each partition. You can do that by clicking the small white circle and dragging it around.
After that, you can rename each partition and define a file system for it.
Diablo for mac. Step 3: Confirm your operation.
Once you hit “Apply”, a new window pops up asking for your confirmation. Take a few seconds to read the text description to make sure it reflects what you intend to do, then click the “Partition” button to continue.
Step 4: Wait until it says “Operation successful.”
To check whether the operation is really successful, go to your Mac desktop. You should see multiple disk icons show up. I chose to create two partitions on my Seagate Expansion — one for backup, the other for personal use. You can find more info in this post: How to Backup Mac to an External Hard Drive.
That wraps up this tutorial article. I hope you find it helpful. As always, let me know if you have any issues during the formatting or partitioning process.
BestCD/DVD Drives for MaciMore2019
If you've recently upgraded to a new iMac or MacBook Pro, you're probably going to need an optical drive if you want to continue importing your movies and music to iTunes, or just access the content on your discs. If you think you'll need an external drive mostly for Blu-Ray discs, most of them will also play DVDs and CDs but are not readable/writable drives for CDs or DVDs. Either way, here are some solid options.
No adapter needed: Confoly USB-C SuperdriveStaff pick
I have this model CD/DVD drive for my Mac computers for multiple reasons. For one, it's practically the same as Apple's SuperDrive in every way, and second, it's got a USB-C cable so I can connect it to my MacBook Pro without needing any additional adapters. Oh, there's a third reason, too. It comes with a USB-A adapter so I can connect it to any standard USB port.
$49 at Amazon
Cupertino's own: Apple USB SuperDrive
Apple's branded playable/burnable CD/DVD drive is the perfect complement to your iMac or MacBook Pro unless you have a late 2016 or newer MacBook Pro, in which case you'll need the USB-C to USB adapter. It's not much larger than the size of a CD case, so it fits snug in your computer bag without taking up a lot of room. All you have to do is plug it into your computer using the USB cable. There's no need for special software or external buttons that might get broken. It's solid, simple, and it looks great with your Mac products.
$79 at Amazon
USB-C and USB 3.0: VisionTech External CD/DVD Drive
With no eject button on the device and powered by USB the VisionTech External CD/DVD Drive is very slim and compact. You can tuck it away anywhere that makes the most sense for you. Preprogrammed for both Mac and Windows, you shouldn't need to do any formatting to get the drive to work. Plus, this drive has both USB 3.0 and USB-C cables, meaning you can plug it right into your MacBook with no adapter needed.
$31 at Amazon
Inexpensive choice: LG GP65NB60
LG makes a CD/DVD drive that is lightweight, fast, and doesn't cost much. It's made of a hard shell plastic material, so it isn't going to feel as sturdy as Apple's SuperDrive or Confoly's USB-C drive. However, in exchange, you get something that's about as light as a CD in its case.
$25 at Amazon
Disc Drive For Mac LaptopAlso worth considering: Verbatim External CD / DVD Writer
Here's another inexpensive choice, this time from Verbatim. Weighing just 12 ounces, this CD/DVD burner is compact, lightweight, and USB powered. It's a suitable choice if you need to back up sensitive data, as well as music and video libraries.
$24 at Amazon
Still serving a need
There are a lot of reasons why you'd need a CD/DVD drive for your Mac, despite the concept being heavily outdated in 2019. Whether you want to digitize your DVD collection or just view a disc on your computer, an optical drive is cheap and sometimes necessary.
As you can see, we've selected the Confoly USB-C Superdrive as our favorite since it's super similar to Apple's SuperDrive and you don't need adapters to utilize it. If you're working with a small budget, take a look at the LG GP65NB60. It gets the job done for a surprisingly low price.
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