I think it is therefore necessary to replace the internal HDD with a 128 or 256 GB SSD. and I was able to reboot my iMac mid 2010 (with very long USB loading times). So I installed High Sierra 10.13.6 on an external hard drive (USB) to test my guess (HDD corrupt). This is probably due to a problem on the internal hard drive, the original 1TB HDD. At each attempt, this message appeared: cannot complete the installation due to a problem. Unfortunately, none of the various attempts were successful.
#Osx sierra install
Then I created an installer via usb stick, and tried to install the operating system on my iMac Mid 2010 (iMac11,3). I was able to download the macOS High Sierra 10.13.6 full installer version thanks to a mid 2012 macbook pro with macOS El Capitan installed.Īll other attempts with the latest mac book pro and already installed versions of the operating system (Catalina or Mojave) have been unsuccessful. Restart your mac and try downloading High Sierra again. I am not entirely sure it will make a difference but uncheck that box.
#Osx sierra update
"Downloading new updates." is a bit misleading it is in fact downloading Install macOS High Sierra.appįrom your earlier screenshot of the Software Update panel you have checked the box Automatically keep my mac up to date. When I click on Download the Software Updates window opensĪnd after a couple of minutes I see this, This will redirect you to the App Store High Sierra page Go to Section 4 and click on Get macOS High Sierra It ushered in the space era of OS X wallpapers, which was used heavily in the new Time Machine interface as well. As such, Leopard was the first version of OS X to break from the Aqua-themed wallpaper.
#Osx sierra upgrade
How to upgrade to macOS High Sierra - Apple Support Complete with a revised, unified user interface and shiny new Dock, 10.5 broke the Aqua mold. (My mac is/ was capable of running High Sierra) I am doing this on a mac with macOS Mojave 10.14.6 installed. If that is not the case then I probably do the same a you. Apple does not take into consideration that you want to download the installer and then install it on another older compatible mac. The reason I ask is that any mac that came preinstalled with a newer OS than High Sierra will not be allowed to download High Sierra or any older OS. The above will install the original OS X that came with your computer from the factory is you use the proper shortcut keys as provided in Step 1.Mike you are trying to download High Sierra to your MacBook Pro, did this MacBook Pro come preinstalled with Mojave or Catalina. To install the original factory version when the computer was new use Command-Option-Shift-R.) (To install the version of OS X that was currently installed use Command-Option-R. Immediately after the chime hold down the Command-Option-SHIFT-R keys until a globe appears. You would either need a copy of the Sierra full installer application or re-download the installer from the Purchases page in App Store or have made a bootable flash drive installer for Sierra. Then you need have a way to install Sierra. You cannot downgrade without first erasing the drive. Use Command-Option-Shift-R to install the original factory version when the computer was new. Use Command-Option-Rto install the version of OS X that was currently installed.
#Osx sierra mac os
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