#RUN DISK UTILITY MAC EL.CAPITAN HOW TO#
#RUN DISK UTILITY MAC EL.CAPITAN MAC OS#
#RUN DISK UTILITY MAC EL.CAPITAN PASSWORD#

The order of repair in this example was Macintosh HD - Data, then Macintosh HD, then Container disk4, then APPLE SSD. Keep moving up the list, running First Aid for each volume on the disk, then each container on the disk, then finally the disk itself.

#RUN DISK UTILITY MAC EL.CAPITAN PASSWORD#

If you're asked for a password to unlock the disk, enter your administrator password.Īfter Disk Utility is done checking the volume, select the next item above it in the sidebar, then run First Aid again.

If the button is dimmed and you can't click it, skip this step for the disk, container, or volume you selected.

If there is no Run button, click the Repair Disk button instead.

In this example, the last volume on the disk is Macintosh HD - Data.Ĭlick Run to begin checking the selected volume for errors. What’s your experience with RAID?ĭo you have any horror stories or difficulties utilizing the technology? We want to hear from you in the comments.For each disk that you're repairing, start by selecting the last volume on that disk, then click the First Aid button or tab. Make certain the data is no longer needed or backed up before proceeding. Note: Breaking the RAID array can and most likely will render the data on the disk useless and unrecoverable. Execute the following command from Terminal to delete the RAID array and split the disks back to their previous standalone format ( Figure E). Identify the RAID volume’s disk ID and make a note of it.Ģ. Quit Disk Utility, then re-install the OS.

#RUN DISK UTILITY MAC EL.CAPITAN MAC OS#

Reformat the drive using Disk Utility/Erase Mac OS Extended (Journaled), then click the Option button and select GUID. Once it’s done, rerun the command from step 1 to verify the newly created RAID volume ( Figure D).ġ. Boot to the Recovery Volume (command - R on a restart or hold down the option/alt key during a restart and select Recovery Volume). To select RAID 1 (Backup), execute the command below ( Figure C).ĭiskutil appleRAID create mirror Backup JHFS+ diskID1 diskID2ģ. RAID1 does slow down performance at the cost of the redundancy. If one drive dies, the remaining drive will continue to function without loss of data. Data is written to both drives at the same time so each drive has a valid copy of the data stored. To select RAID 0 (Storage), execute the command below ( Figure B).ĭiskutil appleRAID create stripe Storage JHFS+ diskID1 diskID2īy contrast, a mirrored array (RAID 1) features fault tolerance by design. RAID 0 offers no fault tolerance, so when one disk dies the data is lost - be sure to keep backups aplenty. A striped array (RAID 0) is developed for performance since it combines two or more disks into one virtual one and the data is written across the drives simultaneously, speeding up the read/write times. Making a note of the disk IDs for which disks will be part of the array, next run you’ll need to decide which type of RAID array to build: Striped (Storage) or Mirrored (Backup). Launch Terminal and execute the following command to obtain the disk IDs since we will need those to complete the build process ( Figure A).Ģ. SEE: OS X El Capitan: The smart person’s guide Building a RAID arrayġ. However, RAID support is still alive and well in Terminal. Master your server with these 7 informative resources (TechRepublic Premium)Įl Capitan’s redesign of Disk Utility changed everything, including the removal of RAID volume management through the GUI.

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#RUN DISK UTILITY MAC EL.CAPITAN HOW TO#

How to test if your Linux server is vulnerable to Log4j Intel announces 12th generation Intel Core and 50 new processors at CES 2022 Up until El Capitan, RAID volume creation was as simple as selecting the tab in Disk Utility and a few clicks later, your RAID or concatenated volume would be ready. RAID management in OS X has existed throughout multiple iterations of the popular Mac OS. Learn the commands necessary to build and destroy RAID volumes in El Capitan. If Apple's elimination of RAID volumes from the retooled Disk Utility has got you down, fret not.

Run disk utility mac el.capitan