You can try third-party data recovery software to recover data from the uninitialized disk on Mac first, and then try some solutions to make the drive usable again.
To retrieve data from the drive that becomes uninitialized on Mac, you will need third-party data recovery software for Mac. iBoysoft Data Recovery for Mac is recommended for its high recovery rate, risk-free environment, Finder-like UI, etc. It scans the selected drive/partition for lost and deleted files, then, you can preview and recover the files found.
After recovering data from uninitialized disk on Mac, you can proceed to fix the drive. In addition to initialize the drive, there are some other remedies you can try:
- Check the connections
- Restart Mac
- Update the driver
- Run First Aid in Disk Utility
- Initialize or format the drive
