Disk Utility 12.x: Format a disk for Windows computers

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Format a disk for Windows computers using Disk Utility

You can use Disk Utility to format a disk to use with a Windows computer.

Notice:Formatting a disk erases all the files on it. Copy any files you want to save to another disk before formatting the disk.

  1. Open Disk Utility, in the Utilities folder in Launchpad.
  2. Select the disk you want to format for use with Windows computers.
  3. Click Erase, and choose one of the following from the Format pop-up menu:
    • If the size of the disk is 32 GB or less, choose MS-DOS (FAT).

    • If the size of the disk is over 32 GB, choose ExFAT.

  4. Type a name for the disk.

    The name’s maximum length is 11 characters.

  5. Click the Erase button, and then click Erase again.

You can also partition a disk using the Master Boot Record partition scheme, which is compatible with Windows.

Partition a disk

Published Date: Jun 1, 2018