There's also an option of MacOS Extended (Case-sensitive, Journaled, Encrypted) if you are likely to have file names that require capital letters. You can encrypt your drive and require a password to access it. There's also the option of MacOS Extended (Journaled, Encrypted) which is a good choice if you are likely to be carrying your laptop or external drive around and don't want anyone to access the contents of the drive should you accidentally lose it. If your Mac isn't updated to High Sierra it will offer MacOS Extended as the default. MacOS Extended (Journaled) (also known as HFS+) - APFS replaced MacOS Extended as the default file system on the Mac when Apple launched High Sierra in 2017. For now we'd advise against formatting in APFS because it won't be readable by Macs that aren't running High Sierra, but this may not matter to you. Read some of the good stuff about APFS here. And it currently only works on SSDs or Flash storage.
But it won't be readable or usable by a Mac that isn't running High Sierra, and Windows or Linux machines won't be able to read or write either. You can choose an encrypted version and a case-sensitive version. There are a number of things that are good about it - such as it being more efficient and more reliable. We'll describe them below, and you'll be able to choose the one that suits you.ĪPFS (Apple File System) - This is the new file system that Apple bought to Macs with High Sierra and it will be the default if you are using that version of macOS. There are a few file formats that you can use but the one that's right for your circumstances depends very much on what you are going to be using the drive for.
#Reformat disk for mac install#
Other reasons you might want to use Disk Utility include making a bootable macOS install drive (covered here) and if you are doing a clean install of macOS. We also have a tutorial on using Disk Utility on a Mac here.
#Reformat disk for mac how to#
Read our roundup of the best storage devices available now: Best storage options for Mac. Also take a look at How to install and run Windows on a Mac.īefore we begin there are a few things you need to know, including the most important decision of all, which format to use. Or it might be that you bought a drive to use with your Mac only to discovered it is pre-formatted for Windows.įortunately Disk Utility, built right into MacOS, can help. Maybe you want to copy something onto a drive to share with a PC or another Mac. Or perhaps you are setting up an external drive for backups. Perhaps you are selling you Mac and you want to completely erase it so that nobody can access your date. There are all kinds of reasons why you might want to format a drive.
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