After a long time waiting the installer finally ended up with the error: The installation was unsuccesfull, please try again. I rebooted the iMac and went to Recovery and had selected the option to install macOS Sierra. First of all I erased the HDD via macOS Recovery. This, of course, did not work.Īs there were only old files on the iMac, I decided to perform a clean install.
It gave the error that the installation had not been successful and should be run again.
Something also notable is that the iMac first failed an upgrade from El Capitan to Sierra via the Mac App Store. As I've tried a lot of things, I'll list them up first as they come with different errors. The installation comes up with errors every time when it's almost finished. If you’re performing this as an upgrade, launch the Install macOS Sierra.app from the root of the newly created drive and follow the prompts to upgrade in a live environment.I'm trying to perform a clean install of macOS Sierra on a late 2009 iMac, but I can't get it to work. From there, select the USB drive partition and follow the prompts to install macOS Sierra on your Mac. To perform a clean install, simply insert your drive, power on the computer, and hold down the Option key to access the boot selection menu. To double-check, open the USB volume and verify that the macOS Sierra installer was copied to the drive ( Figure D)( Figure E). Once the process completes, you’ll receive an on-screen confirmation that the process completed successfully. The drive will be erased, and then installation files will be copied to the volume ( Figure B)( Figure C).ģ. Sudo /Applications/Install\ macOS\ Sierra.app/Contents/Resources/createinstallmedia -volume /Volumes/USB_DRIVE_VOLUME_NAME -applicationpath /Applications/Install\ macOS\ Sierra.app -nointeractionĢ. Note: All data on the USB drive will be erased ( Figure A). Launch Terminal.app and enter the following command to kick off the process of extracting the macOS Sierra files to the USB drive. Insert the USB flash drive into a USB port and note the volume name of the drive as it is mounted to Finder. SEE: Screenshots: A complete roundup of new macOS Sierra features (TechRepublic) Creating a bootable USB installer for macOS Sierraįollow these steps to create a bootable USB installer.ġ.
User account with administrative privileges.Apple computer with Mac App Store (10.6.8+).Install MacOS Sierra.app (the installer downloaded from the Mac App Store).SEE: macOS Sierra: The smart person’s guide (TechRepublic) Requirements for creating a bootable drive IT admins for enterprise environments might look toward other distribution methods, such as DeployStudio. To facilitate this upgrade process, creating a bootable USB installer drive helps get this deployed quickly for SMB environments.
While the process of upgrading to macOS Sierra is pretty easy for consumers, IT administrators may have a more difficult time getting this update to all the end users they support. One of the most beautiful and user friendly Linux distributions gets even better Get lifetime access to Microsoft Office 2021 for just $50
How to share your screen in Google Meet for macOS This macOS is supported on computers manufactured in 2010 or later.
The download is available from Apple’s Mac App Store, and it clocks in at just under 5 GB. How to create a bootable USB installer for macOS Sierraįollow these steps to take to create a bootable USB installer drive for macOS Sierra to deploy version 10.12 of Apple's OS on supported devices.Ĭontinuing with its yearly release cycle for hardware and software, Apple released macOS Sierra, version 10.12 of its popular operating system, on September 20, 2016.