In disk utility, you will have an internal and external drive. Back Up Your Mac Hard Drive before FormattingConnect the drive to the Mac. In El Capitan, Disk Utility looks slightly different, as you can see below.Table of Content 1. What Disk Utility looks like in Lion through Yosemite. Then proceed to highlight your computer's hard drive select the Erase tab, make sure OS X Extended (Journaled) is selected, then hit the Erase button. Step 5: Wipe Your Hard Drive.
![]() Format Hard Drive For Os X Mac OS Extended FormatMac OS Extended format for macOS Sierra 10.12 or earlier APFS format for macOS Big Sur 11, Catalina 10.15, or Mojave 10.14 Different file system formats exist for different operating systems. Recover Data Lost due to Accidental FormattingAn internal or external Mac storage drive requires compatible files system format to be accessible in macOS. Format a Mac External Hard Drive Using Terminal4.Preparing the startup disk to reinstall macOS Formatting is helpful for: You may even need to manually format your internal or external Mac storage drive or volume in the compatible file system.So, you end up losing your data.Also, when you connect a corrupt or unreadable external storage drive to your Mac, macOS will prompt you to initialize the disk. When your Mac storage drive has stored data on it, and you accidentally erase the drive in a new file system format, macOS removes all references to the data. Perfecting the storage drive in case Disk Utility fails to repair itBut storage drive formatting involves certain risks. Changing the file system format for cross-compatibility For an external or non-boot volume, copy all your valuable files and folders, and paste them to another external storage device. Back Up Your Mac Hard Drive before FormattingBefore erasing your Mac hard drive be it internal or external, you must back up the drive to ensure zero data loss. The next section discusses the correct way to format your Mac storage drive without data loss. Crack after effect cs6 macRelease the keys once you see the Apple logo or spinning globe. Once you’ve backed up your Macintosh HD by using Time Machine, perform the following steps to format your startup disk and reinstall macOS:1- Restart your Mac and immediately press and hold Command + R keys. So, you need to boot your Mac in macOS Recovery mode to access the startup disk and erase it using Disk Utility. But you can’t format the startup disk while your macOS is running. Format the Startup Disk in macOS Recovery ModeIf you want to reinstall macOS or upgrade your macOS, you need to format your Macintosh HD startup disk. If you haven’t set up your Time Machine backup drive, you can set up the drive now.Read More: How to Set Up Time Machine on Mac 2. ![]() Here, replace the FS with the required file system format, DN with the name of the drive, and D# with the drive’s identifier.When the process completes, Disk Utility erases the storage drive to the correct file system format. Type diskutil eraseDisk FS DN D#. Ensure you have backed up all the data from the external drive. Note the name and identifier of the external storage drive. In the Terminal window, type diskutil list. Type ‘ terminal’ and hit Return to launch the Terminal application on your macOS. But you can get back your formatted data from the Mac hard drive by using a Mac hard drive recovery software. And, Disk Utility doesn’t provide any option to undo the format. Recover Data Lost due to Accidental FormattingDid you accidentally format a wrong hard drive on your macOS? Or erased the Mac external storage drive without backing it up in the first place?Data loss can happen due to accidental formatting. In case Disk Utility fails to format the drive, use Terminal to perform the same task. And why wait if the software has a 30-day money-back guarantee.Read More: How to Activate Stellar Data Recovery Professional on your Mac? ConclusionTo format your Mac startup disk or external storage drive safely, you must back up the drive before erasing it with Disk Utility in a compatible file system format. To save the files, you need to activate the software. The tool supports a variety of hard drive brands, USB types (Thunderbolt, 3.0, 2.0), and Fusion Drives.
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