Stuck System Upgrades
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If you encounter a Mac that is stuck on the loading screen
- Check the disk first with DriveDX.
- Check to see if the storage and hard drive cable are good. The important SMART stats to look at are sector errorsand CRC errors.
- Use Disk Utility to run first aid. If you get anything other than OK and "Operation Successful" there is an issue that needs to be repaired before moving on
- Hold the Shift key to boot to safe mode. Type in the password. Reboot when done