Very slow access to USB HDD


  1. Posts : 327
    W10
       #1

    Very slow access to USB HDD


    I have a rather young 4 TB USB HDD. Some time ago I formatted it in Ext4 and used it in a Linux system. Now I will use it in Windows. I formatted it in NTFS (Quick Format) and copied 2 TB data to it. Up to here everything was ok.
    I connected this USB3 capable HDD to a USB2 port. Now, with every computer start-up, starting Windows takes 5 minutes (normally 20 s), during which there is continuous communication between Windows and the HDD (blinking light). Finally, windows boots fully. Opening some folders on the HDD may take another few minutes. Finally. after several (many) minutes the HDD starts to work well and accessing folders on the HDD is then very quick. Behaviour of the HDD has become normal.
    In contrast it seems that connecting the HDD to a USB3 port, everything goes normal, with normal start-up times.
    I donot think it is a computer issue since I noticed the same behaviour with another desktop PC.
    I cannot understand the hugh time difference Windows needs accessing the HDD on a USB2 or USB3 port. In Linux, I only had USB2 ports and accessing the HDD was never a problem.
    Who has an idea?
    W10 64bit v1909
      My Computer

  2. Megahertz's Avatar
    Posts : 1,264
    Windows 7 HP 64 - Windows 10 Pro - Lubuntu
       #2

    Run a check disk
    Open a CMD window as administrator and run
    chkdsk x: /f (replace x with the drive letter)
    If it ask to un mount = Yes
    Pay attention on the results, specially bad blocks, bad clusters etc
      My Computer


  3. Posts : 289
    Windows 10
       #3

    The problem is solved:
    "In contrast it seems that connecting the HDD to a USB3 port, everything goes normal, with normal start-up times."

    The disk is slow because it is operating at USB 2.0 speed. USB 2.0 is only for mouses and keyboards.
      My Computer

  4. Megahertz's Avatar
    Posts : 1,264
    Windows 7 HP 64 - Windows 10 Pro - Lubuntu
       #4

    Anibor said:
    The problem is solved:
    "In contrast it seems that connecting the HDD to a USB3 port, everything goes normal, with normal start-up times."

    The disk is slow because it is operating at USB 2.0 speed. USB 2.0 is only for mouses and keyboards.
    There is more than a slow USB 2.0.
      My Computer


  5. Posts : 327
    W10
    Thread Starter
       #5

    The issue is solved now. In disk management - properties - events - information I found in the info text, which I do not understand, some quotes: "outranked drivers, Device Updated false".
    This brought me to Device Manager - Universal Serial Bus controllers. Of the 11 items 3 could be updated and 8 had already the newest drivers.
    After the update, Windows reacts much quicker to the HDD, connected to the USB2 port.
    What still surprises me is that these USB controllers are not part of a regular Windows update and further that there were no problems with other USB3 capable HDD connected to this port.
    Apparently, this recently bought HDD was more critical regarding the drivers.
      My Computer


 

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