Windows 8 and 8.1 Forums


HDD Massive slowdowns during file copy and installs

  1. #11


    Posts : 7
    Windows 8.1


    Quote Originally Posted by crawfish View Post
    The top checkbox is safe with UPS or laptop battery, the bottom one apparently not so much, as the drive itself is supposed to have its own separate PSU. This is the article that needs to be read concerning that option:

    Dangerous setting is dangerous: This is why you shouldn't turn off write cache buffer flushing - The Old New Thing - Site Home - MSDN Blogs

    In any case, enabling it is not necessary to avoid the problem described by the OP. When I copy large files between HDs, and the process degrades to the actual speed of the drives, it's not 2-4 MB/sec. It's more like 40-100 MB/sec depending on the drives involved. This is true even for the backup drives I've used in eSATA and now USB3 docks.

    OP, are you sure you're not copying within the same drive, perhaps between partitions hosted on the same drive? Is there any chance you're launching multiple copy operations at once involving the same drive(s)? I would guess probably not since you've thought of other things that might try to concurrently access the drives, though the features you've cited are supposed to get out of the way on their own.
    even if i am copying to the same drive, i should not be hitting 2-4Mb/s. interestingly enough, i just tried to copy a file to the same drive and got decent results, around 50Mb/s with no drops. The one last thing I might try is to replace the sata cables.

      My System SpecsSystem Spec

  2. #12


    Beloit, Wisconsin
    Posts : 125
    Microsoft Windows 10 Pro 64-bit


    Click image for larger version

    This is how I have my drive set up under device management! I don't experience any drive performance issues.
      My System SpecsSystem Spec

  3. #13


    Posts : 4
    windows 8


    - how long is it since last time you defrag? that's might be a problem because windows do stop writing to RAM at some points when copying
    - try to turn off the Real-time protection in Windows Defender and test the drive, it constantly checks the IO (had hard time playing LoL with it)
      My System SpecsSystem Spec

  4. #14


    Posts : 21
    Dual boot: Win 8.1 Pro x64; Win 7 HP x64


    Was this issue ever solved?

    I have a similar issue. jpolacko and I have similar systems. Why slow down on one and not on another. I also note he runs Norton and I run MS Defender, a much less resource intensive AV...from what I understand.
      My System SpecsSystem Spec

  5. #15


    Posts : 7
    Windows 8.1


    Quote Originally Posted by PlatypusKnight View Post
    Was this issue ever solved?

    I have a similar issue. jpolacko and I have similar systems. Why slow down on one and not on another. I also note he runs Norton and I run MS Defender, a much less resource intensive AV...from what I understand.
    performance did return once i figured out which of the drives were giving me issues and changed the sata cables. AHCI and IDE modes have been left unchanged. i am considering moving the 4 green drives into a 4-bay enclosure and running them off the e-sata or usb 3.0 from the back of my motherboard. maybe the motherboard was not meant to have all sata ports connected at the same time.
      My System SpecsSystem Spec

  6. #16


    Posts : 21
    Dual boot: Win 8.1 Pro x64; Win 7 HP x64


    Quote Originally Posted by bobrooney View Post
    [
    performance did return once i figured out which of the drives were giving me issues and changed the sata cables
    So it was the cables?

    That's not something I wanted to hear.
      My System SpecsSystem Spec

  7. #17


    Posts : 7
    Windows 8.1


    Quote Originally Posted by PlatypusKnight View Post
    Quote Originally Posted by bobrooney View Post
    [
    performance did return once i figured out which of the drives were giving me issues and changed the sata cables
    So it was the cables?

    That's not something I wanted to hear.
    it could have also been the mainboard. i didnt keep tabs on what ports the drives were plugged into. its one of the reasons why i need to get a a 4-bay external enclosure or at least a 4-bay drive dock. i have a feeling that the old cables still might be good, and that the ports are acting up once in a while. maybe the old cables needed to be re-seated, plugged out and plugged back in. i dont know...i really didnt have much time to speculate.
      My System SpecsSystem Spec

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HDD Massive slowdowns during file copy and installs
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