This is an important step if you want to make sure that any files currently on the drive are safely erased.
Best Format External Hard Drive 2018 Mac And YouPerhaps you are selling you Mac and you want to completely erase it so that nobody can access your date.Or it might be that you bought a drive to use with your Mac only to discovered it is pre-formatted for Windows.Best Format External Hard Drive 2018 Install And RunAlso take a look at How to install and run Windows on a Mac.
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. Well describe them below, and youll be able to choose the one that suits you. There are a number of things that are good about it - such as it being more efficient and more reliable. You can choose an encrypted version and a case-sensitive version. But it wont be readable or usable by a Mac that isnt running High Sierra, and Windows or Linux machines wont be able to read or write either. Theres 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 dont want anyone to access the contents of the drive should you accidentally lose it. Best Format External Hard Drive 2018 Password To AccessYou can encrypt your drive and require a password to access it. Theres also an option of MacOS Extended (Case-sensitive, Journaled, Encrypted) if you are likely to have file names that require capital letters. However, its an older file system and files are limited to 4GB or smaller - so its not much use if you are copying movie files for example. FAT32 offers no security and its more susceptible to disk errors. Although there are third party tools that could allow you to do so. Either head to Applications Utilities, or tap Command Space and start typing Disk Utility. NOTE that formatting your drive will erase the contents, so make sure you back it up first. This may be APFS, or it may be Mac OS Extended (Journaled) depending on how the drive is currently formatted and whether you using macOS High Sierra or an older version of the OS. If youd like to use something else click on the Formatting options to reveal the drop-down window. Choose your format you require depending on how you intend to use the formatted drive (see above for more information about the format types). This can be anything you like, but choose something obvious that will give you a hint as to whats on there. This will bring up another window that enables you to choose how youd like the drive to be formatted, with a slider ranging from Fastest to Most Secure.
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