Click Start > File Explorer > This PC. But somehow, macOS doesn’t allow you to write data to the drive.On Windows, connect your thumb drive. If you are transferring data from an OS 10 system to an OS 9 computer, or trying to access the data through OS 9 (with a drive formatted through OS 10), you will need to have installed OS 9 driverswhen you erase the drive.So, you just bought a new external hard drive or a portable SSD and wanted to use it on your Mac. When you format your external hard drive, it should be formatted for Mac OS Extended.In these cases, they get formatted and are assigned a drive letter.That’s all because it’s been initialized with Windows NT File System (NTFS), which is primarily for PCs. Some external USB hard drives don’t have the option to be initialized. Right-click the disk that says Not Initialized or Offline, then select Initialize Disk or Online. In the File.Click the Windows icon, type Disk Management, then click Create and format hard drive partitions.Just follow this easy step-by-step guide and you’re all set.Right click on the external hard drive. Mac OS Extended (Journaled). In a few simple steps you are ready to go and can save your back-up files to the external drive, keeping your information safe and giving you peace of mind.In this post, I’m going to show you how to format your external drive for a Mac-compatible file system i.e. I just dont have the space (its a little over 3 Part 2: Format External Hard Drive for Mac with Disk Utility Reformatting an external hard drive for use with Mac OS is not as difficult as it might seem.
External Drive Format And Windows Mac OS ExtendedI’ll also show you how to do that below. I highly recommend you also create multiple partitions. The operation will erase all data and your files will be gone for good.Pro tip: If your external drive has a large volume, like mine – a 2TB Seagate Expansion. When prompted by the system, click OK to proceed and then OK again to confirm.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 problem is that on macOS, you can’t work with files saved on an NTFS drive unless you use a paid app like Paragon NTFS for Mac. It showed this format:What is NTFS? I’m not going to explain here you can read more on Wikipedia. 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. 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. 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. Click on this icon on the top left corner and select “Show All Devices”.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. Select that disk and click the “Erase” button, the one highlighted in red in the screenshot below.Note: if your hard drive is not showing on the left panel, it must have been hidden. It should show up on the left panel under “External”. They might be different if your Mac has a different version.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. How to Partition an External Hard Drive on MacIf 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. 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. Right-click on the icon for your external drive on Mac desktop, then select “Get Info”. You may also want to rename your external drive here.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. 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”. Here’s how to make the “Partition” button clickable. That’s because your external drive hasn’t been formatted/erased to a Mac-compatible file system yet. 2020: many of you reported that the “Partition” button is always greyed out. If you select the one below it, the Partition option will be greyed out and become unclickable.Update Feb. ![]() 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. After that, you can rename each partition and define a file system for it.Once you hit “Apply”, a new window pops up asking for your confirmation. You can do that by clicking the small white circle and dragging it around. Galaxy note 9 emulator for macAs always, let me know if you have any issues during the formatting or partitioning process. I hope you find it helpful. You can find more info in this post: How to Backup Mac to an External Hard Drive.That wraps up this tutorial article. I chose to create two partitions on my Seagate Expansion — one for backup, the other for personal use.
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