how to delete partition on mac external drives

If you have an old or cheap flash drive with poor read and write speeds, then it can take longer to boot up and perform installations. If you don’t want to proceed with partitioning the disk, click Cancel.Īfter the operation finishes, click Done.Īfter you partition a storage device, an icon for each volume appears in both the Disk Utility sidebar and the Finder sidebar.Two factors matter the most for turning a USB drive into a boot drive: performance and storage capacity. If you want to proceed with partitioning the disk, click Continue. If a dialog appears that indicates it will take a long time to resize the startup volume, read the information in the dialog, then do one of the following:

Read the information in the Partition Device dialog, then click Partition.

Type a name for the volume in the Name field.įor MS-DOS (FAT) and ExFAT volumes, the maximum length for the volume name is 11 characters.Ĭlick the Format pop-up menu, then choose a file system format.Įnter the size or drag the resize control to increase or decrease the size of the volume. Note: If you click Add Volume instead, you can click the Add button to create an additional APFS volume in the container, or click Cancel to return to the Disk Utility window without making any changes to the storage device.

How to delete partition on mac external drives