Reallocated sectors tend to jump quite drastically from 1 to 20 to 200 to thousands if a disk is bad. But you have to watch this number very closely, because if it increases over time it’s likely that the disk is dying. If you have 1, 2 or even 20 reallocated sectors on your drive it may not be a cause for panic, as many hard drives can last for years with only a few bad sectors being reallocated. Reallocated sectors are a warning sign that your disk may be dying if the number is very high or if it increases rapidly. Reallocated Sectors count is the total number of sectors on your hard drive that have been reallocated to spare sectors (this is a spare area on your disk that’s there in the case a sector on the main part of the disk is bad).Įssentially, your hard drive has encountered an error reading, writing or verifying data on one of the sectors on the disk and has reallocated the data from that sector to a spare sector (spare space) on the disk. CrystalDiskInfo 05 – Reallocated Sector(s) CountĪ number greater than 0 in the 05 – Reallocated Sectors Count line will set off CrystalDiskInfo’s warning system and throw a caution. However, if your pending sector count increases you should immediately replace the drive to prevent data loss. If your count is fairly low (say <20) and after continuing to use the drive, rebooting the system, etc the count stays the exact same, your drive may be okay. The main way to determine whether or not your drive is likely to fail is how quickly this count increases. Pending sectors are a warning sign that your drive may experience some problems or failure. The pending sector count can go up/down depending on whether or not the drive can later successfully read data from the sector, or if the sector is bad it will become a reallocated sector (ID 05) and the pending count will decrease but the reallocated count will go up. Your Current Pending Sector Count is a warning about unstable sectors on your drive that are waiting to be remapped (reallocated) to spare space on the drive.īasically, your hard drive had trouble reading a sector of the drive and it is considering remapping the sector to one of the spare sectors. CrystalDiskInfo C5 – Current Pending Sector CountĪ number greater than 0 in the C5 – Current Pending Sector Count column will cause CrystalDiskInfo to set off a Caution warning. There are 3 common errors that will set off CrystalDiskInfo to issue a warning about your hard drive’s health, so let’s jump into these and figure out exactly what each one means. This will give you the actual number of each column instead of gibberish only robots can read by memory.Ĭommon CrystalDiskInfo Data Points That Should Give You ‘Caution’
It can sometime show by default as a hexadecimal value (letters and numbers) and that’s not very helpful unless you can convert Hex to Decimals in your head, if you’re not a robot then you can change this by going to:įunction -> Advanced Features -> Raw Values inside of CrystalDiskInfo and setting it to ’10 DEC’ to get a decimal output for the Raw Values column. The ‘Raw Values’ column is the actual number of errors that your drive is detecting for that S.M.A.R.T attribute. You don’t want to be looking at the ‘Current’ or ‘Worst’ columns, you only want to pay attention to the ‘Raw Values’ column. It’s unlikely that you have 100 reallocated/pending/uncorrectable sectors, you’re probably just looking at the wrong column in CrystalDiskInfo. You’ve just opened up CrystalDiskInfo and it’s showing an amber Caution warning next to one of your hard drives, now what do you do? Is your hard drive about to crash? Do you need to replace your hard drive right away? Are things really that bad/can I keep using the drive?īefore we dig into what each S.M.A.R.T data point means, I need to address a common error I’ve seen online:
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