Install Mac Os High Sierra On Fusion Drive

Install Mac Os Sierra File
Install Mac Os High Sierra On Fusion Drive 2017
Install Mac Os Sierra Download

Oct 07, 2019 If you've always wanted to partition your Mac's hard drive so you can run a separate operating system — including the launch of macOS Big Sur — in tandem with your current one, it's surprisingly easy to do so thanks to Apple's built-in disk utility program. Here's how to partition your Mac. Dec 18, 2017 I recall that it wasn't safe to install on iMac's with fusion drive when MacOS High Sierra first came out, and heard that existing owners should wait. It's been awhile since then so is it safe to finally install update now? I want to be sure before I attempt to do so. Dec 28, 2012 The last part of the process is the most important. When Mac OS X sets up a Fusion Drive, it creates a small 'boot partition' for both the solid state disk and normal hard disk inside the drive. To be able to boot your computer from the Fusion Drive, you must install Hackintosh boot files onto all. Aug 04, 2017 Open With Notepad. On the Notepad, insert the command below or you can copy and paste from below. Smc.version = “0” Enter Command #Step 6: Install macOS High Sierra 10.13 on VMware. Once you have completed the steps above, then you’re able to install it right now. Nov 30, 2017 Drag-n-drop the “Install macOS Sierra.app” (or which version you have) from the /Applications folder onto that dialog window, and continue to. Of course, compete the installation in the normal fashion. If the upgrade to High Sierra seemed normal, continue to step #2. Restart the Mac into Recovery Mode. To do that, select Restart from.

Reader Bill emailed wondering about the safety of upgrading his iMacs to macOS High Sierra, since each has a Fusion Drive, Apple’s hybrid of SSD and hard drive.

Have you ever thought of carrying your Mac OS on an external device and gain access to it at any time? If the reaction is yes, then you have arrived at the right post. We will be providing you with the information through which you can install macOS High Sierra on an external drive.

Part 1. How to Install macOS High Sierra on the External Drive

Before beginning the process, there are a few requisites that you must meet. You will need an external drive with a minimum capacity of 16 GB, and second, you will need the copy of the macOS High Sierra installer. You can obtain the installer from the App Store by searching for 'macOS' and download it to your Mac hard drive.

Step 1: Formatting the External Drive

To allow the external drive to function as the startup disk, you need to format it to Mac OS Extended and employ GUID partition map. Start the utility disk. You can find it under the Applications category or search it using Spotlight.

As utility disk runs in the background, you can check for the format of the external drive. In the following example, the drive is in Master Boot Record format. First, unmount the drive. After unmounting, you can select the same drive from the left of the window as shown in the figure below. Now, from the tabs that appear in right window, choose 'Erase' option.

In the next window, you can now format the external drive as 'Mac OS Extended' and opt for GUID Partition Map. If you choose to, you can also give it a name. Press 'Erase' to proceed. After completion, you will see the following screen. Press 'Done' to proceed.

Step 2: Installing macOS High Sierra on the External Drive

After you complete the download of the macOS installer, double click the same from the Applications folder to begin the installation procedure. Press 'Continue' in the following screen.

Click 'Agree' to the accept license agreement. In the next window, press the 'Show all disks' option. The window will display the local drive and the connected external drive. Choose the external drive in this case. You will have to key in your system user name and password.

macOS High Sierra will begin installing on the selected external hard disk. It requires some time to complete the task. You can wait until the process is complete. Before it completes the installation, the Mac will restart. Therefore, it is preferable to save any other work that is in progress.

After restarting, the Mac will take a minimum of 15 minutes to complete the installation process. It will then reboot from the new device. You then have to proceed with the general process of activating Siri, time zone, and adding the user account. Once you complete these actions, you will possess the new version of macOS High Sierra on your external drive. Do not remove the external drive, as Mac OS will access the files on the drive periodically. You can now use the same every time you wish to use High Sierra.

Part 2. How to Use macOS High Sierra with the Bootable Hard Drive

As you now have macOS High Sierra in the form of bootable hard drive, you can use it with another compatible Mac or when the situation demands. However, remember that using the external device as a bootable drive will slow down the functioning of the system. More importantly, it is useful only when you are facing trouble with your existing internal drive of the Mac.

The following information will be helpful in case if you choose to use macOS High Sierra with the bootable hard drive:

Step 1: If there is a trouble with the current hard disk, and you wish to solve it or use the new version of the OS, then plug the bootable external drive to the Mac.

Step 2: Power on the machine and hold the option button until you notice the recovery screen appear. From the screen, you can choose the bootable external device that you have created.

Step 3: You will boot into the macOS High Sierra version for that particular session.

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Here is how I solved the issue:

The issue came from the inability for the installer to unmount the Fusion drive before rebooting. I figured this out in Disk Utility as it could not unmount the drive to 'repair' it.
So I used the instructions in the second part of this Apple documentation: APFS Fusion
- Open a Terminal window (in the Installer launch screen, it is under the 'Utilities' menu item.
- Look for the Unix names of your drives:
  - #> diskutil list internal
  - take note of which drive is the SSD, which is the HDD. In my case, it was as in the example from Apple: SSD was disk0, HDD was disk1.
- Force-unmount your target logical volume:
  #> diskutil unmount force disk2s1
- Separately re-format each Drive of the previously-unmounted Fusion volume:
  - #> diskutil eraseDisk JHFS+ SSD disk0
  - #> diskutil eraseDisk JHFS+ HDD disk1
- Recreate a Fusion Drive:
  #> diskutil cs create 'Macintosh HD' disk0 disk1
- Recreate a logical volume on it:
  diskutil cs createVolume 'Macintosh HD' JHFS+ 'Macintosh HD' 100%
- Quit the Terminal application. You'll be taken back to the installer.
Retry to install High Sierra. In my case the issue was completely solved.