How to Format Mac Internal/External Hard Drive Easily

Posted by Bella Brown to DVD to Hard Drive, Mac Tips | Updated on December 6, 2018

"How to format a hard drive on Mac. Hi, I am using an iMac with the latest version of operating system. I have bought an external hard drive for my Mac and plan to copy DVD on Mac with DVD ripper for Mac and then save the DVD copies to my Mac external hard drive for easier DVD movies access and playback. How do I format Mac hard drive before using?" Formatting Mac hard drive is straight forward, but if you are new to Mac, it can be confusing. We explain how to format internal/external hard drive on macOS (macOS High Sierra, macOS Sierra, El Capitan or earlier) for Mac and Windows.

1. Why to format hard drive on MacBook Air/Pro/iMac

There may be occasions when you need to format Mac hard drive. For example,

2. Things to do before formatting Mac hard drive

Many users followed instructions to format Mac hard drive but ended up deleting some important data that they couldn't get back any more. It's worth mentioning that formatting a hard drive on Mac will delete all current data stored on that drive. Thus, data backup is a must in case of data loss.

Tips: you have lots of Mac backup software to choose from, among which Time Machine, iCloud, and MacX MediaTrans are the best bets. I recommend using MacX MediaTrans, a lesser-known but efficient Mac file transfer and backup tool. It helps mount iPad iPhone as a flash drive and backup your Mac data including music, videos, movies, TV shows, photos, apps, documents and more in a simple click. If you've made a backup, let's start formatting Mac hard drive.

backup data before formatting mac hard drive

3. How to Format a Hard Drive on macOS (macOS Sierra or Earlier)

The built-in disk manager tool on Mac Disk Utility can be used to format Mac hard drive without any other third party tools. If you've all set, follow steps below to format internal startup disk and Mac external hard drive, HDD, etc. on MacBook Pro/Air, iMac using Disk Utility. We emphasize once again before we get started that formatting hard drive for Mac and Windows PC will delete all these data on the drive.

Step 1: If you want to format Mac external hard drive, connect the external hard drive you'd like to format to the computer. If you are going to format extra internal drive on Mac, you have to partition hard drive on Mac.
Step 2: Open Disk Utility by heading to Finder > Applications > Utilities and clicking on Disk Utility. You can add the Disk Utility to the Dock for quicker access.
Step 3: Select the external hard drive on the left-hand panel you want to format on Mac. You'll see the selected hard drive's info displayed.
Step 4: Click "Erase" button at the top of the Window, and a window will pop up informing you that the erasing will wipe out all the current data on the drive.
Step 5: On the Erase window, enter a name, select OS X Extended (Journaled) format, and choose GUID Partition Map on the Scheme filed.
Step 6: Click "Erase" tab to start erasing/formatting Mac hard drive. Now, you can use external drive on Mac to copy DVDs, movies, photos, videos etc.

how to format mac hard drive

What to do if formatting Mac hard drive takes too long

Formatting WD external hard drive issues on Mac. I am having problem formatting a wd external hard drive to my mac. It's really slow.
Many users are experiencing slow hard drive formatting on Mac, try the possible solutions to slow Mac hard drive formatting process.
1. Try to format hard drive on Mac on quick format.
2. Check whether your hard drive is damaged or not.
3. Try to restart the computer and format Mac hard drive again. Note that the Mac hard drive formatting speed also depends on the hard drive size.

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