Error while installing macOS High Sierra
Error Message:
"An error occurred while preparing the installation. Try running this application again."
System Info:
Model: Macbook Pro 2016 13,1 (Basic model).
Current OS: Sierra 10.12.6.
Available Storage: 25GB
Troubleshooting:
- Running the installer again. Same error.
- Deleting the downloaded copy. Success.
- Re-downloaded High Sierra again from app store and apple server. Success.
- Running the installer again. Same error.
- Upgrading through Internet recovery mode. Downloading error.
- Re-instaling macOS Sierra 10.12.6. Success.
- Running the installer again. Same error.
PLEASE HELP.
MacBook Pro with Retina display, macOS Sierra (10.12.6)