Learn how to fix a locked mac drive and get it working again. However, note that this process will erase all data from the drive This guide will help you diagnose your hard drive’s permission issues and demonstrate what to do if your external hard drive is “read only” on your mac — not only to fix the error but also to preserve your data.
External Hard Drive 'Read Only' on Mac? Fix It Now! (3 Ways)
Reformatting the hard drive is often the most effective solution to the “read only” permission issue on mac
