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You reformat your MacBook Pro, on the other hand, if you have already been using your MacBook Pro’s drive for some time, and for one reason or another, you want to erase its contents - maybe because your computer is acting up and you want to see if reinstalling your operating system will solve the problem, maybe because you are suspecting your MacBook Pro has been infected by a virus or a malware and you are hoping that reformatting your MacBook Pro can get rid of it, or maybe you’re going to sell or give away your MacBook Pro to someone and you want to delete its contents before you hand it over. Since new computers come shipped with pre-installed drives, including MacBooks, they are usually already formatted and ready for immediate use, so, typically, the only times that you will need to format a drive is if you bought a new one (like an external drive or a USB drive, for example) and it has not been formatted yet or if it has already been formatted but the file system that it uses is not fully supported by your MacBook Pro. You format your MacBook Pro when you have a new drive and you want to prepare it for storing information, so what you do is erase its contents, tell your MacBook that you want to use that drive to store and process information, then to establish a file system that will determine how data will be organized afterwards. Formatting and reformatting your MacBook Pro both involves erasing whatever contents your drive (HDD, SSD, USB drives, etc ) may have had, but they do have a slight difference. After all, they sound pretty much the same, so they must probably do the same thing, right? “Formatting” and “reformatting” are two terms that are often used interchangeably in computer troubleshooting tutorials, so it can be pretty confusing for casual computer users who are not sure which of the two they need to do on their MacBook Pro or if there is actually any difference between the two at all. If you want to start up again from the disk you erased, select Reinstall macOS in the utilities window, then click Continue and follow the onscreen instructions to reinstall m acOS.If you have been having some issues with your MacBook Pro like noticeable slowdowns, applications frequently crashing, or programs refusing to work altogether, one of the solutions that you might be advised to do is to format or reformat your MacBook Pro.Quit Disk Utility to return to the utilities window.After the erase is done, select any other internal volumes in the sidebar, then click the delete volume (–) button in the toolbar to delete that volume.ĭuring this step, disregard any internal volume named Macintosh HD or Macintosh HD - Data, as well as any volumes in the External and Disk Images sections of the sidebar.Click Erase. However, if you see an Erase Volume Group button, click that button instead.
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Format: APFS or Mac OS Extended (Journaled), as recommended by Disk Utility.
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Click the Erase button in the toolbar, then enter the requested details:.Select Macintosh HD in the sidebar of Disk Utility.From the utilities window, select Disk Utility and click Continue.
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