I have a Western Digital Passport with about 405GB data on it. My Mac HD has 118GB available on it.
I recently tried to move a file to my external and I got an error message that the drive cannot be modified. I have used this drive numerous times in the past on this same computer with no issues. I was hoping to not have to reformat my External. I DON’T/CAN’T lose all of my data. Any suggestions?