Hello everyone, Today, when I plugged in my external 1 TB harddrive, it did not show up immediately on my Macbook Air. When I opened it in Disk Utility, it first told me to repair the disk, but when I tried, I got the message: Error: Disk Utility cant repair this disk. Back up as many of your files as possible, reformat the disk, and restore your backed-up files. I want to back up the files, but I cannot seem to access them. They are still not coming up in Finder. The first time I got the message, the disk was showed in Finder, but I didn't make a back up then on another harddrive. Now, nothing happens when I plug it in. What can I do to make a back up of the files on the external harddrive? I recently bought an external harddrive for a back up of my files. It's relatively new and contains about 40 GB of files. I have ejected the external harddrive in the incorrect way three times last week, because it was taking a long time. Thank you so much for any help or tips that you may be able to offer!