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  1.    19 Jun 2016 #61
    Join Date : Jul 2015
    Posts : 5,910
    Windows 10 Pro

    Quote Originally Posted by Maggidon View Post
    I second the "yep" or in French, "Yeppier!"
    oui! oui!
      My System SpecsSystem Spec

  2.    19 Jun 2016 #62
    Join Date : Jul 2014
    Posts : 6,778
    All kinds

    Quote Originally Posted by DavidOdden View Post
    The reasoning I have seen is that two logically adjacent sectors S1+S2 could be physically in the order S2+S1, so to read both sectors, you may wait one revolution for the data to be under the read head. Multiply by a zillion for a large file, and that slows things up. With an SSD, physical location doesn't matter -- you don't have to wait for something to move under the read head. So there is no advantage to defragging. The disadvantage is that each location on an SSD can be rewritten a limited number of times, which is not a factor with spinning drives. Although that limit might be rather large, in the petabyte range, but some optimizing programs spend every waking / inactive second shuffling data around so they could chew through a mega-write in a week.
    Actually "spinners" also have limited number of bytes that can be written to any spot and can weaken it's magnetic properties. SSDs also use What is wear levelling of SSD drives? - Quora to spread number of writes to as many cells as possible. Some have an invisible partition for that while others just use whatever free space there is.
      My System SpecsSystem Spec

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