You might be prompted to enter your Apple ID. Disk Utility shows the recommended Mac format by default.
#MAC OS DISK UTILITY YELLOW PARTIITON MAC OS#
When I try to create another partition it says that I need to enable journaling, but the option is greyed out. Format: Choose either APFS or Mac OS Extended (Journaled) to format as a Mac volume. Disk Utility lists a single SSD with a capacity of 251GB and a single partition (OS X Base system) that is taking up 250.4GB.
#MAC OS DISK UTILITY YELLOW PARTIITON MAC OS X#
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. Im trying to reinstall Mac OS X El Capitan on a new Macbook Air. Double-click Disk Utility - Utilities from the search results to open it. Press Command+Space on your keyboard or click the Spotlight icon in the upper-right corner of the top menu bar to open Spotlight search. If you want to proceed with partitioning the disk, click Continue. Way 1: Open Disk Utility via Spotlight Search. 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.