What does non-zero Current Pending Sectors indicate?

• A. Drive instability — replace ASAP
• B. Drive healthy
• C. No impact on performance
• D. Pending sectors have been remapped

Answer: (A)

Current Pending Sectors are sectors that the drive could not read and has marked to be remapped. If this value is non-zero, it means there are unreadable sectors waiting relocation to spare areas, which is a warning sign that the drive is losing reliability. Those sectors may cause read errors, retries, and possible performance slowdowns, and without successful remapping the data on those sectors could be at risk. Until those sectors are dealt with (either read successfully and the pending flag clears, or they’re remapped to spare space, which would then increase the Reallocated Sector Count), the drive should be treated as problematic. That’s why the best action is to consider replacing the drive ASAP and ensure data is backed up. The other statements don’t fit: a non-zero pending count does not mean the drive is healthy or that there is no performance impact, and pending sectors have not yet been remapped—remapping occurs only after a failure to read and is reflected in a separate metric.