If you haven't already use a rear USB port. Since, a replacement HD is present, open the HD ext. case and reseat the connections found inside several times and retry again to access it. Check results, if OK, retrieve data ASAP. If not, then the HD is going south and no amount of fiddling will do. Since, you have success in whatever method to retrieve some data, repeat until done or at least until it really fails. You could also swap HDs with the replacement ext. case itself and if its a power issue. If nothing works, then google for data recovery s/w either free or paid for. if the data is that important, stop now and allow a recovery service to retrieve it. You could also, mount the ext. HD, removed from ext. case and mount int. to PC and check results, Again, if none of this helps or seems to get worse, data recovery service.
i have a 400GB WD external HDD that has failed to respond of copy files from it. I have tried to retrieve some data from it but most of it still sits there. I have been given a replacement drive from WD but i need to recover the files before the drive is sent back. The drive is behaving strangely, sometimes it says that it has an I/O drive error and cannot open particular files but i can see the files in there. Most of the bulk is digital pictures (30-50GB) and rest being pdf and MS office related files. i did try chkdsk feature but it kept telling me that the files are unreadable (I/O error). However, I have copied some pictures a meager fraction that i was able to move successfully but it took ages to do so. Can some one really suggest something intuitively that may prevent me from spending too much money to get the piece of junk workable.
ALSO WHEN I CONNECT THE DRIVE IT KEEPS ON SPINNING AND DOES NOT STOP AND I HAVE A HARD TIME EJECTING IT TOO.
ANY COMMENTS WOULD BE HIGHLY APPRECIATED.