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.
Formatting (actually re-formatting) a solid state drive (SSD) is a quick and simple process to restore the drive to a clean state, similar to when the drive was new. If you are looking to sell or donate your old drive, you will want to not only reformat your drive, but also erase all the data in a separate action.
This is an article for Mac, it is erasing a hard drive from a Mac command line, it is not a Windows tutorial. You can, however, format a Windows hard drive from a Mac if you connect the Windows hard drive to the Mac and format it through Disk Utility, or the command line as described above. For Mac, the Mac OS extension is the file system included in Mac OS 10.12 and earlier Mac versions. APFS is the default file system for SSDs on Mac. And APFS takes the advantages of strong encryption, space sharing, disk snapshots and is compatible with SSD on new Mac. It is recommended to choose the compatible format that the system lists. How to Format SSD on a MacBook by Elvis Michael. Both notebook and desktop Macs can use external drives. Jupiterimages/Polka Dot/Getty Images. Related Articles.
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.
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.
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.
Google drive extension for mac os. 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
https://treevoice.weebly.com/how-to-format-external-hard-drive-for-ps4-on-mac.html. 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”. App store for macbook pro.
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.
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.
![Mac Mac](/uploads/1/3/3/9/133933110/912159355.jpg)
Formatting a drive so you can install and boot macOS requires the GUID partition map. Unfortunately, Disk Utility in macOS High Sierra doesn’t make that option easy to find. Flinto for mac free download. Read on to see where it’s hiding.
We’ll use an external drive for this example. Start by connecting the drive to your Mac. Once it’s mounted, launch Disk Utility. The app is hiding in the Utilities folder inside the Applications folder.
Format Ssd For Mac Using Terminal
Disk Utility hides the GUID format option by defaultClick the View widget in the upper left corner of the Disk Utility window and choose Show All Devices. Now you should see your drive device descriptions with the drive name nested underneath. Select the drive description just above the drive name for the device you want to format.
Format Ssd For Mac And Windows
Disk Utility’s View option shows devices, not just volumesNow click the Erase tab. Set the format to Mac OS Extended (Journaled) and the Scheme to GUID Partition Map. If you selected the drive name instead of its description you won’t see the Scheme option.
Disk Utility showing GUID option for drive formatHow To Format Ssd For Mac Osx
Click Erase to wipe all the data that’s currently on the drive and reformat it for your macOS install. The drive will be formatted HFS+, but installing macOS High Sierra or Mojave will change the format to APFS, assuming you’re installing on an SSD.
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