Issue Description
Disk errors cause slowdowns, crashes, or startup problems.
Common Causes
- Improper shutdowns
- File system corruption
Step-by-Step Solution
Step 1: Open Disk Utility
- Applications → Utilities → Disk Utility
Step 2: Run First Aid
- Select startup disk
- Click First Aid → Run
Step 3: Repair in Recovery (If Needed)
- Boot into Recovery
- Run First Aid again
Step 4: Restart and Verify
- Restart Mac
- Confirm errors resolved
Explore Further
- Replace failing drives
Prevention & Best Practices
Avoid force shutdowns.