Mac Disk Utility

Disk Utility Tool Utility to manage local disks and volumes Most options require root access to the device Usage: diskutil [quiet] , where is as follows: list (List the partitions of a disk) info[rmation] (Get information on a specific disk or partition) listFilesystems (List file systems available for formatting) activity (Continuous log of system-wide disk arbitration) u[n]mount (Unmount a single volume) unmountDisk (Unmount an entire disk (all volumes)) eject (Eject a disk) mount (Mount a single volume) mountDisk (Mount an entire disk (all mountable volumes)) enableJournal (Enable HFS+ journaling on a mounted HFS+ volume) disableJournal (Disable HFS+ journaling on a mounted HFS+ volume) moveJournal (Move the HFS+ journal onto another volume) enableOwnership (Treat as exact User/Group IDs for a mounted volume) disableOwnership (Ignore on-disk User/Group IDs for a mounted volume) rename[Volume] (Rename a volume) verifyVolume (Verify the file system data structures of a volume) repairVolume (Repair the file system data structures of a volume) verifyDisk (Verify the components of a partition map of a disk) repairDisk (Repair the components of a partition map of a disk) verifyPermissions (Verify the permissions of a Mac OS X volume) repairPermissions (Repair the permissions of a Mac OS X volume) eraseDisk (Erase an existing disk, removing all volumes) eraseVolume (Erase an existing volume) reformat (Erase an existing volume with same name and type) eraseOptical (Erase optical media (CD/RW, DVD/RW, etc.)) zeroDisk (Erase a disk, writing zeros to the media) randomDisk (Erase a disk, writing random data to the media) secureErase (Securely erase a disk or freespace on a volume) partitionDisk ((re)Partition a disk, removing all volumes) resizeVolume (Resize a volume, increasing or decreasing its size) splitPartition (Split an existing partition into two or more) mergePartitions (Combine two or more existing partitions into one) appleRAID (Perform additional verbs related to AppleRAID) coreStorage (Perform additional verbs related to CoreStorage) diskutil with no options will provide help on that verb