If the sectors at the advanced location are still “bad”, Disk Drill will do the same until it reaches the end of the storage area, or the healthy set of sectors. A few sectors are skipped this way, but the chances to gain scanning speed are much higher. For example: you are scanning your external hard drive, Disk Drill locates bad sectors that don’t read well, and the response from the hardware is so slow it may take days to scan even one megabyte of disk area. Disk Drill, in this case, will mark a few megabytes ahead of the last failed sectors and will proceed with scanning from there. The sole purpose of this technique is to prevent endlessly long scans when the storage is lightly damaged or just doesn’t operate properly, which might be a temporary issue. When more consecutive sectors are soft-bad, Disk Drill will mark some more as bad, in advance, so it skips an expanded area in attempt to re-gain its scanning speed by omitting some of potentially unrecoverable data. This actually gives you the freedom to manipulate this list if your drive suddenly feels better: for instance, when it cools down. It means they only exist within Disk Drill, and are not physically marked as bad, as during real disk formatting. It’s important to realize, Disk Drill’s bad sectors are in fact what we call “soft” bad sectors (or blocks).
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