CrystalDiskInfo显示B1 Vendor Specific为磁盘健康不良指标的原因及相关性能问题咨询

Hey there, sorry to hear your disk's acting up with large file processing and throwing that red "B1 Vendor Specific" warning in CrystalDiskInfo—let’s unpack what’s going on here.

First off, that B1 attribute is a vendor-specific S.M.A.R.T metric, which means it’s not part of the universal S.M.A.R.T standard. Different hard drive/SSD manufacturers use custom attributes to track metrics that matter most to their hardware, so you won’t find it listed in generic S.M.A.R.T attribute lists online.

Your guess about it being wear level is actually super likely, especially if this is an SSD. Many SSD makers use custom attributes like this to measure remaining lifespan: the current value of 1 (with a threshold of 10) suggests your drive’s wear is already way past the manufacturer’s safe threshold, which is why CrystalDiskInfo is marking the health status as "bad". This directly ties into your poor performance with large files too—worn-out SSDs often suffer from drastic slowdowns in read/write speeds as their NAND cells degrade.

Here’s what you should do next:

• Double-check your drive’s brand and model, then head to the manufacturer’s official support site—they’ll have a breakdown of their custom S.M.A.R.T attributes, so you can confirm exactly what B1 tracks for your specific disk.
• Backup all your important data immediately! A "bad" health status means the drive is at high risk of failing completely, so don’t wait on this.
• If it’s an SSD, this level of wear usually means it’s near the end of its usable life—plan to replace it soon. For mechanical drives, this custom attribute might point to other hardware issues (like head wear or calibration problems), so backing up and considering a replacement is still the safest bet.

备注：内容来源于stack exchange，提问作者MaxPower