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What's the drive perfetch count in hdparm and what does it do? Should I change it? I would like to have both: Information for HDDs and SSDs

hdparm -h

 -P   Set drive prefetch count
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  • Apparently it's something that was long dropped from official ATA/ACS standard. And even in (old) drives that implement it, the actual implementations were probably vendor-specific.
    – Tom Yan
    Dec 7, 2021 at 10:17
  • But what is it, what does it change?
    – france1
    Dec 11, 2021 at 12:53
  • (if it would) @TomYan
    – france1
    Dec 11, 2021 at 12:53

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