iMac High Sierra installation unsuccessful due ...

High Sierra installation on iMac unsuccessful; system freezes with message : The path/System/Installation/Packages/OSinstall.mpkg appears to be missing or damaged. Multiple restarts provide same problem. How do I recover my prior OS?

The only way to recover your previous OS is from your backup (Time Machine or clone) - you did make a backup? In order to do what you want, you have to erase the entire hard drive.

最後更新：2017-10-10 09:56:50