You can use terminal to check a disk for bad blocks (physically damaged areas of the disk).
First find the name of the disk, run: diskutil list And make a note of the disk name, eg disk8
After finding the disk name, run: sudo fsck_hfs -fy -S /dev/DISKNAME Enter the admin password and let the check run.
Note: This process does not guarantee that it won't make the damage worse, but this applies to all processes of this type.
I usually write a blog post about once a week. The latest post can be viewed here: Deranged Rants: Many of them are totally feral, unhinged, and totally irrational. (posted 2024-11-13 at 17:55:14). I do podcasts too!. You can listen to my latest podcast, here: OJB's Podcast 2024-08-22 Stirring Up Trouble: Let's just get every view out there and fairly debate them..