Jennifer Davis-Lewis wrote:
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That WD Hard Drive is bad. About 21K bad sectors have already been reallocated and there are currently 414 more bad sectors still being used which have not been swapped out yet. More bad sectors are likely to be found as attempts are made to access this Hard Drive. The very quick transfer rate test which isn't very accurate shows it was unable to write anything to that HD (0 Bytes Written and 0 Bytes/hour.....I've never seen that with any other DriveDx report posted on this forum). And there were two read errors during that quick test.
You will probably not be able to do anything with this Hard Drive with that many bad sectors.
It is time to purchase a new external drive for your TM backups.
You should also get a second external drive for any data you want to store on an external drive because it is a bad idea to use a backup drive for anything other than backups. Plus if the data you want stored on external media is important, then you need to back up that data as well to another location since backing it up to the same physical drive is not a backup as you are now discovering with this failed WD Hard Drive.
Thank you. It is a Time Machine drive as well as holding some files.
I hope those other files are backed up somewhere besides on this bad Hard Drive. If those other files on this WD Hard Drive are important, but you have no other copies/backups on other media, then you are going to have a struggle to attempt to recover them which will require paying a professional data recovery service.
Unfortunately this Hard Drive has too many errors on it & its failure is too far along for you to be able to recover any data from it yourself. Any attempts to do so will just make the Hard Drive failure worse where even a professional data recovery service may be unable to recover any data. Both macOS and most consumer data recovery software are unable to deal with all the I/O errors produced by a failing Hard Drive.
