When you encounter corrupted data, follow these steps in order of risk and effectiveness:

: Sudden power loss or surges during a write operation can cause critical data to be scrambled. Prevention Strategies

: Use Disk Utility and its "First Aid" feature to scan and repair file system errors.

: Software bugs, system crashes, or improper shutdowns (like pulling a USB drive out without ejecting) can leave files partially written.

: If built-in tools fail, specialized software like Disk Drill or 4DDiG File Repair can reconstruct damaged file structures for photos, videos, and documents. Common Causes of Data Corruption

Identifying the cause can help you choose the right fix and prevent future occurrences:

Data corruption occurs when digital information is altered from its original state, making it unreadable or unusable. Whether it is a single file that won't open or a system-wide "Device is corrupt" message, most issues can be resolved using built-in software tools or specialized recovery programs. Immediate Recovery Steps

: Restoring from a recent cloud backup or external drive is the fastest and most reliable way to recover data. Use Built-in OS Repair Tools :