2/19/2023 0 Comments Reinstall macos high sierra![]() ![]() Permission denied.ĭetails - iMac "Core i5" 3.3 27-Inch (5K, Late 2015) 3. I am not able to boot into any other modes with this iMac, I also do not have a backup of the Mac (I do of the 2 which is annoying, they're different models) Any help with this will be much appreciated.Įrror - Unable to re-install High Sierra.Įrror message* - The operation couldn't be completed. ![]() In the next window, press the 'Show all disks' option. Click 'Agree' to the accept license agreement. Press 'Continue' in the following screen. I know the OS X base system is the wrong place for it to boot from but it's the only option I have, I cannot add or erase any of the partitions on the HDD. 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. I have found one other post by /u/ALiiEN I have tried following the steps other users have posted to no avail. I am now trying to re-image the iMac but getting the error* state below. So, we sent the iMac off to get all the information off it before I'd re-image it. ![]() Every operating system update is all about making the system more efficient, professional, and robust, and thats the main focus of macOS High Sierra. New Features Introduced in macOS High Sierra. Background - The user let the HDD get to a 100% so the mac was stuck booting into Disk Utility mode, called apple who advised there was no way to get back into the system without wiping the Mac. This article will learn what macOS High Sierra is, its new features, and how to install High Sierra on your MacBook or iMac. ![]()
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