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How To: Install Mac OS High Sierra 10.13 – RAID 0 Configuration

How To: Install Mac OS High Sierra 10.13 – RAID 0 Configuration

RAID 0 is a popular disk setup solution to achieve the fastest possible read and write disk speeds by splitting data between two or more hard drives. The latest version of Mac OS X High Sierra (10.13) does not allow you to simply install to any kind of RAID configuration. This has frustrated a lot of the Mac community. Until Mac OS X High Sierra officially supports RAID configurations, follow the steps below to setup a fully functional RAID 0 configuration.

 

*You will not be able to install system updates from the App Store on your live RAID volume. However, see our workaround at the end of guide. * 

 

In order to install the latest version of Mac OS X onto a RAID 0 slice, you must clone a copy of your Mac OS X installation straight to the RAID 0 drives (not a restore, such as Time Machine, which will not work). To accomplish this, you need an external hard drive and a copy of SuperDuper software in addition to your RAID 0 drives. We will use the same Mac machine (that will use RAID 0) to perform all the steps below. This method uses hardware RAID and is not a software RAID. 

Note: We strongly recommend taking a full backup (Time Machine) to another drive just in case when performing these steps! Save yourself from an accident!

 

  1. Use SuperDuper to clone your existing copy of Mac OS to the external drive. If you want to a fresh copy of Mac OS High Sierra instead, clone a copy of a fresh install of High Sierra to the external drive using SuperDuper.
 

Note: Be sure to complete your SuperDuper clones on the same type of Mac you will install the RAID 0 configuration on. This is important because your Mac OS High Sierra clone will have drivers and system files specific to that machines hardware.

 

Superduper raid 0 copy high sierra mac

 

  1. Next, boot from the cloned external drive we created. Plug in the drive and hold down the option key and choose the external drive install media.
 
Mac os sierra boot option disk selection
 
  1. Now that we booted up from our external hard drive, we can manage our Mac’s internal hard drives and create our RAID 0 array. Remember to only create a RAID 0 array with the same model and capacity size drives.
 

Open Disk Utility in Applications -> Utilities and create your RAID 0 array shown below.





Go to File -> RAID Assistant

 

Mac disk utility raid assistant

 

Select Striped (RAID 0)

 

Mac disk utility raid 0 striped

 

 

Select your 2 internal hard drives to create the RAID array from

 

Mac disk utility add raid 0 disks

 

Name your single RAID drive. For Chunk size, choose a lower size if you will be using the RAID for regular needs (email/browsing/word processing.) For video editing, choose a higher chunk size.

 

Mac disk utility raid chunk size

 

Success screen appears

 

Mac disk utility raid created successfully

 

 

  1. Open SuperDuper and copy the external drive to your new RAID 0 drive.
 

The copy will complete successfully. Finally, go to System Preferences -> Startup Disk and select your new drive and restart. The first restart may take a little time as your boot files load for the first time.

 

You can confirm your successful RAID 0 in Disk Utility.

 

Mac os high sierra raid 0 disk utility

 

If system updates are available in the app store they will appear, but do not attempt to install them. Your computer will fail installing them and you will likely damage your OS installation! App Store Application updates will install OK. See below workaround.

 

Install Mac OS System Updates on RAID drive

  

  1. Make a SuperDuper copy of your current Mac OS X RAID 0 drive to an external drive.
 
  1. Boot the SuperDuper copy external drive (on your Mac with RAID 0) and install the Mac OS X System Updates from App Store.
 
  1. Boot the SuperDuper copy external drive with installed updates (from your Mac with RAID 0) and use SuperDuper to copy back to your RAID 0 drive. (This will erase the old RAID 0 system).

 

 

Now you have the latest Mac OS X system updates installed on your RAID O configuration drive again. The entire process took us under 1 hour using SSD drives and USB 3.0.


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Comments

eykaus on Tuesday, 13 November 2018 12:58

Hi, just to tell you that the clean installation and update on an iMac 11.2Mid 2010 of 21.5 "with x2 SSD Kingston on RAID 0 16GB Ram has worked perfectly with the MacOS High Sierra Patcher Tool for Unsupported Macs, without APFS, only Mac OS Plus registered.

We have tried it as a resource since High Sierra does not allow to install natively in RAID volumes.

Just Use: http://dosdude1.com/highsierra/

Excellent day! .

Hi, just to tell you that the clean installation and update on an iMac 11.2Mid 2010 of 21.5 "with x2 SSD Kingston on RAID 0 16GB Ram has worked perfectly with the MacOS High Sierra Patcher Tool for Unsupported Macs, without APFS, only Mac OS Plus registered. We have tried it as a resource since High Sierra does not allow to install natively in RAID volumes. Just Use: http://dosdude1.com/highsierra/ Excellent day! .
Denis on Wednesday, 27 June 2018 14:53

Worked like a charm for my macbook pro 17" late 2011 2.5ghz i7.
Have 2 samsung 850 pro installed in RAID 0 and see about 1Gb/s read/write.

Worked like a charm for my macbook pro 17" late 2011 2.5ghz i7. Have 2 samsung 850 pro installed in RAID 0 and see about 1Gb/s read/write.
Taruga on Monday, 18 June 2018 07:34

I'm using High Sierra in RAID 0 with Mac OS Extended (Journaled) and I'm able to install OS system updates from the app store without any problem.
But I did not follow your method, or anything like it.
My RAID 0 setup was done in the terminal in my custom way.

I'm using High Sierra in RAID 0 with Mac OS Extended (Journaled) and I'm able to install OS system updates from the app store without any problem. But I did not follow your method, or anything like it. My RAID 0 setup was done in the terminal in my custom way.
Become The Solution on Saturday, 02 June 2018 15:58

This WORKS. Please note, you will NOT be able to install system updates from the app store on your live volume - they will appear, but do not attempt to update them as it will break your OS install most likely. To get system Mac OS High Sierra updates installed, use our workaround mentioned above. Regular app updates will work FINE on your live RAID 0 drive.

This WORKS. Please note, you will NOT be able to install system updates from the app store on your live volume - they will appear, but do not attempt to update them as it will break your OS install most likely. To get system Mac OS High Sierra updates installed, use our workaround mentioned above. Regular app updates will work FINE on your live RAID 0 drive.
Steve on Saturday, 02 June 2018 14:06

Anyone know if this actually works - or is it better to wait for official support?
If so, any idea when that may be?
Thanks

Anyone know if this actually works - or is it better to wait for official support? If so, any idea when that may be? Thanks
Become The Solution on Thursday, 17 May 2018 07:47

Yes, it does work. You have to use the super duper method we outlined.

Yes, it does work. You have to use the super duper method we outlined.
Don on Thursday, 17 May 2018 06:03

THIS WILL NOT WORK. SIMPLY PUT RAID DOESN'T WORK YET ON HIGH SIERRA. I TRIED SEVERAL TIMES OVER SEVERAL HOURS. WHOEVER WROTE THIS ARTICLE DOESN'T KNOW WHAT THEY'RE SAYING OR DOING. DON'T WASTE YOUR TIME.

THIS WILL NOT WORK. SIMPLY PUT RAID DOESN'T WORK YET ON HIGH SIERRA. I TRIED SEVERAL TIMES OVER SEVERAL HOURS. WHOEVER WROTE THIS ARTICLE DOESN'T KNOW WHAT THEY'RE SAYING OR DOING. DON'T WASTE YOUR TIME.
Ramon on Tuesday, 01 May 2018 04:29

Ok, thanks, I will try this weekend, with HFS of course.

Ok, thanks, I will try this weekend, with HFS of course.
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Wednesday, 21 November 2018


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