12/28/2021

Install Macos High Sierra On External Hard Drive

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Feb 05, 2020 I’m trying to install macOS Sierra onto a hard drive that I’m planning on installing into an old (potentially broken) 2011 iMac that currently does not have a hard drive. The problem is that the app from Apple’s installer can only be run on a Mac running Sierra (or earlier), which I do not possess. Jun 07, 2021 Install macOS on the external drive. Run macOS on the external drive by pressing Alt/Option at start up on an Intel-powered Mac, or pressing and holding the on switch on an M1 Mac.

I suspect you need to format the target disk.


Install macOS on the external drive. Run macOS on the external drive by pressing Alt/Option at start up on an Intel-powered Mac, or pressing and holding the on switch on an M1 Mac. Click Multibeast – High Sierra 10.2.0. How to Install Mac OS on PC: Downloading High Sierra Installer. Open Mac’s App Store by clicking the App Store app icon is blue with a white “A” on it, in Mac’s Dock. Click the search bar in the upper-right side of the App Store window. Apr 27, 2021 Download: macOS Big Sur, macOS Catalina, macOS Mojave, or macOS High Sierra These download to your Applications folder as an app named Install macOS version name.If the installer opens after downloading, quit it without continuing installation.

Drive Preparation - El Capitan or Later


  1. Open Disk Utility in the Utilities' folder.
  2. After Disk Utility loads select the drive (out-dented entry with the mfgr.'s ID and size) from the side list.
  3. Click on the Erasebutton in the Disk Utility toolbar. A panel should drop down.
  4. In the drop down panel set the partition scheme to GUID. Set the Format type to Mac OS Extended (Journaled.)
  5. Click on the Apply button and click on the Done button when it is activated.
  6. Quit Disk Utility.


Install Macos High Sierra On External Hard DriveInstall Macos High Sierra On External Hard Drive

Install Macos High Sierra On External Hard Drive For Mac

You must not format the target disk using APFS because High Sierra cannot use it as a bootable disk.

Install Macos High Sierra On External Hard Drive Windows 7

Sierra


Apr 17, 2020 8:23 PM

I'm wondering if there is a way to install Mac OS High Sierra using terminal onto a specified drive?

I'm working with a bit of a unique situation as I've been running Mac OS Sierra successfully in a RAID0 setup on a 15' 2011 MacBook Pro. I've swapped the SATA-connected optical drive for a second internal SSD for maximum read and write speeds.

When I attempt to go through the installation process for High Sierra, I boot into recovery mode with High Sierra already installed on an external drive and the two freshly erased and partitioned internal SSDs in Mac OS Extended (Journaled) format. I then combine both of the internal drives I wish to use in the RAID0 format with Disk Utility's RAID Assistant. After successfully combining and mounting the drives, I return to the High Sierra Installer to attempt to install the OS on the RAID0 drive. I'm given the error 'You may not install to this volume because it is part of a AppleRAID.'

I've spoken with three Apple Senior Advisers over the phone and via chat who were all very willing to help me but unable to find any solution.

My hunch is that because the High Sierra installer automatically converts internal drives during installation into the new APFS, rather than using Mac OS Extended (Journaled) format, it may not be able to do this with a striped RAID virtual drive. I'm able to format both individual SSDs into the APFS format using Disk Utility but when combining the drives using the RAID Assistant the only option is to erase and combine using Mac OS Extended (Journaled).

Can i install high sierra on external driveInstall Macos High Sierra On External Hard Drive

I have been able to find some code that forces internal drive installation using the older file system, but you are unable to specify a drive:

Install Macos High Sierra On External Hard Drive For Laptop

I'm willing to attempt to force-install to the mounted RAID drive if there is a way to use terminal to attempt this.

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