Trying to repair an external storage device in Disk Utility I first clicked "Verify Disk..." and then "Repair Disk..." but i got the below error:
Verify and Repair volume “disk3s2”
Repairing file system.
Invalid BS_jmpBoot in boot block: cc4542
File system check exit code is 8.
Updating boot support partitions for the volume as required.
Error: Disk Utility can’t repair this disk. Back up as many of your files as possible, reformat the disk, and restore your backed-up files.
How do I solve the problem?
Specs: OS X Yosemite 10.10.5