I would repost it here, but people get grumpy when i try to spread upvoted helpful information. For example: Note: The Manage disks and volumes feature is currenlty available only for Windows Insiders. In this case, your computer will inform you the same by displaying a similar warning message. When Windows sends this notification, select the message or go to Start > Settings > System > Storage > Manage disks and volumes, then select Properties for the problematic disk to see additional details. I wrote a much longer explanation here on SuperUser. Sometimes, the hard disk can have a bad sector or two. you don't care too much about the data in that sector.eventually the disk gets a good read, moves the data to a new sector, and blocks that damaged sector from ever being used again.If an error is found or unexpected behaviour is detected, it warns the user about the current situation and also can perform appropriate actions (for example, start an automatic backup). if you need to read part of a file), you will notice your system will stall for a moment (possibly up to two minutes), while the drive tries, and tries, (and retries, and retries) to read the sector - hoping it can get a good read.Įventually you will see an event in your Windows System event log, from the Disk source, saying that the disk was unable to read that sector. It can warn you of signs that a drive spindle is going bad or the chips in your SSD are failing based on collected data, but it can’t predict failures as a result of power surges, spontaneous failure of a component on a drive’s control board, or other unfortunate events. Hard Disk Sentinel runs in the background and verifies SSD / HDD health status by inspecting the SMART status of the disk (s). If you happen to try to read what is in that sector (e.g. So the drive retries a few time, before giving up - for now - and marking it as Pending. It can't just give up on the data in that sector, because it means throwing away your data. But it cannot do that until it can correctly read what is on that sector. The drive wants to mark that sector as bad, and begin using one of the drive's space sectors to replace it. It means there is data on the disk that the hard drive is unable to read. Pending sectors are a bad thing a very bad thing.
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