- #Disk formatting explained mac os
- #Disk formatting explained install
- #Disk formatting explained password
- #Disk formatting explained windows
For higher security, continue moving to the slider to the right.Move the slider to the second option where it says “This option writes a single pass of zeros over the entire disk.” This will overwrite the entire drive once. This means you or someone else could resurrect the files easily using data-recovery software, which isn’t necessarily a good idea. Fastest will erase the drive by removing the header information, but will leave the underlying files intact, although they will be hidden.
This is an important step if you want to make sure that any files currently on the drive are safely erased. This will bring up another window that enables you to choose how you’d like the drive to be formatted, with a slider ranging from Fastest to Most Secure. Next, click the Security Options button.
This can be anything you like, but choose something obvious that will give you a hint as to what’s on there.
#Disk formatting explained mac os
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.
#Disk formatting explained windows
Windows can read HFS+ drives but can’t write to them. There’s also an option of MacOS Extended (Case-sensitive, Journaled, Encrypted) if you are likely to have file names that require capital letters.
#Disk formatting explained password
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. 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.
#Disk formatting explained install
Making a bootable macOS install drive (covered here) and if you areĭoing a clean install of macOS. Other reasons you might want to use Disk Utility include