Hello, my MBP (early 2013) just got to the latest High Sierra update but I got the above error screen. I went in safe mode to get the files I needed (just in case) but I want to avoid a clean install and start all over again. Is there anything I can do and go back to normal ?
Thanks
John
Oh **** this is like an epidemic. Browse this forum, this has been gone through many times.
I'm gonna make a copy-pasteable response for the future:
1. Restart your mac and press alt-option when it's booting. Select your system disk from the bootup menu.
2. You'll get back to your system. Go online and download 10.13.4 Combo Update. Try to install it.
3. If it fails, restart and press cmd-R while booting. You will go to recovery console.
4. Start Terminal at Utilities, disable system integrity protection (SIP), remove the installer data folder (/macOS Install Data/) and re-enable SIP. Commands:
cd / (go to root of your system disk)
csrutil disable (disable SIP)
rm -rf macOS\ Install\ Data/ (removes the folder and all its files, use sudo if you're told you have no permissions)
csrutil enable (enable SIP)
reboot (restarts)
5. You will boot back to your system. Try installing the 10.13.4. Combo Update again.
..
The macOS installation couldn’t be completed after a High Sierra update fail
