Tonight after a routine MacOS update (10.13.2) disaster struck and my Mac got stuck in an update boot loop. After a few hours of panic, reading online and trial & error I managed to resolve it. Here’s what I did in the hope it also helps someone else.
It depends on whether your current Mac is able to run the higher OS. If the App Store offers the more recent OS, it is safe to attempt it, as the installer will check the hardware and report back if it cannot handle it, and won’t install. OS X El Capitan is already installed on this Mac. Quit the Installer to restart your computer and try again. You need to increase EFI partition if you want to dual boot with windows in uefi mode, if you still can't, maybe you need to use kernel patch for your CPU. Looks like you trying to install mac on ntfs partitioned hdd, you say you just. The installation was successful without any issue, and the Mac Mini is working perfectly fine until mid-October. All update was done. In October, I attempted to install MacOS Catalina through 'macOS Catalina Patcher' but no success (by both upgrade and clean install). Sep 26, 2016 OS X El Capitan is already installed on this Mac. Quit the Installer to restart your computer and try again. You need to increase EFI partition if you want to dual boot with windows in uefi mode, if you still can't, maybe you need to use kernel patch for your CPU. Looks like you trying to install mac on ntfs partitioned hdd, you say you just.
Steps
El Capitan Could Not Be Installed On Your Computer Without
From the “MacOS could not be installed on your computer” screen:
- Press and hold “option” key and click restart
- In the “Startup disk selection” screen, use the arrow keys to select your main hard drive (not the MacOS update)
- Wait for your Mac to boot normally
- Download the latest combo update directly from Apple. (this is a full system image, not an incremental update)
- Open and install the update
- Grab a snickers, this will take a while
My environment: 2017 Macbook pro 15” Touch Bar with MacOS 10.13.1 (High Sierra) installed and tried to update to 10.13.2 using the App Store.
Reinstall Os X El Capitan
If this was helpful to you, consider buying me a coffee or thanking me at @molsjeroenon twitter!