this post was submitted on 25 Nov 2023
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We are digital librarians. Among us are represented the various reasons to keep data -- legal requirements, competitive requirements, uncertainty of permanence of cloud services, distaste for transmitting your data externally (e.g. government or corporate espionage), cultural and familial archivists, internet collapse preppers, and people who do it themselves so they're sure it's done right. Everyone has their reasons for curating the data they have decided to keep (either forever or For A Damn Long Time (tm) ). Along the way we have sought out like-minded individuals to exchange strategies, war stories, and cautionary tales of failures.
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As long there are no reallocated sectors the drive may still be fine (your current data certainly has some damage, you better have a backup here.) Basically a "uncorrectable" is a sector that can't be read anymore for various reason.… aka the data is bad currently. It does not automatically mean the sector/disk structure itself is broken.
The proper operation in this case is to full wipe the drive with a proper format (zero fill). Don't do a quick format! Only afterwards you will know for sure the drive is bust or not. In case there's permanent damaged sectors those "pending" ones would convert to "reallocated" sectors. If there was just some bad data the "pending" ones simply will disappear. If your disk collects reallocated sectors then it's probably time to look for a new disk (albeit a low count of reallocated sectors that stays stable isn't the end of the world either).