You'll see the MacOS Utilities window choose 'Disk Utility.' Now you can choose to erase your startup drive, and choose 'Mac OS Extended (Journaled)' as the operating system. The instructions below are for Windows 10, but other versions of Windows from Windows 7 and up can also format an external drive as exFAT for use with Mac as well. To get around that problem, hold down the Command + R keys when you turn on your Mac and let go when the logo appears. If you want to format your Mac's system drive, you can't do that when the Mac is running normally because the drive is in use by the operating system. However, FAT32 has a maximum 4GB file size limit whereas exFAT can work with files as large as 16EB. Both FAT32 and exFAT can be used on Windows PC and Mac. drive formatted for Windows (which will usually pre-formatted in the NTFS format). So, if you want to use an external hard drive on both Windows and Mac, you need to format it to a filesystem that is compatible with Windows PC and Mac. Usually, you'll want ExFAT, which is the default for the MacOS. The LaCie Rugged SSD Pro external drive is designed for professional. Select the drive you want to format and then choose “Erase.”Ĥ. At the top of the window, click 'Erase.'ĥ. In the pop-up window, choose the file system you want to use.
