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  1.    26 Feb 2016 #1
    Join Date : Feb 2016
    Posts : 2
    Windows 10 Professional

    Problem Ejecting Sandisk Flash Drive


    Whenever i try to eject my Sandisk flash drive, by right-clicking on it's icon and clicking on "Eject Cruzer",
    I get an error window with the title, "Problem Ejecting USB Mass Storage Device".
    The message says, "Windows is unable to stop the device 'USB Mass Storage Device'.
    Don't remove this device while it is still in use. Close any programs using this device and then remove it."

    This only happens the first time I attempt to eject my flash drive since connecting it.
    The second time I try to eject it, it always works.

    Does anyone have any idea what the problem could be?
    I know it's not a problem with my flash drive, because it works just fine on other computers.

    I tried uninstalling and reinstalling the driver for the flash drive in the Device Manager, but that didn't work.
      My ComputerSystem Spec
  2.    26 Feb 2016 #2
    Join Date : Nov 2015
    Posts : 299
    Win-10 Pro x64

    Hi retroboy87,

    I don't why that's occurring, but just so you know, you should be able to configure the flash drives so they are safe to just pull out, rather than "safely removing them." I know this is not an answer, but more of a 'work-around' if needed. It should already be defaulted that way as well. More HERE.

    Click image for larger version. 

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    b1rd
      My ComputerSystem Spec
  3.    26 Feb 2016 #3
    Join Date : Oct 2013
    Posts : 1,962
    Windows 7

    The safely remove is there to make sure that all write buffers have been written. That is normally the case if you give it a couple of seconds. The 'false' busy signals can be ignored at that time.
      My ComputerSystem Spec
  4.    26 Feb 2016 #4
    Join Date : Feb 2016
    Posts : 2
    Windows 10 Professional
    Thread Starter

    Thanks for the replies.

    I already have Quick Removal enabled.
    I know I can just pull my flash drive out without safely removing it, but I want figure out what's causing this problem.
    I'm fine with using Quick Removal in the mean time though.
      My ComputerSystem Spec
  5.    27 Feb 2016 #5
    Join Date : Feb 2015
    Bamberg Germany
    Posts : 18,001
    Win10 Pro, Win10 Pro N, Win10 Home, Win10 Pro Insider Fast Ring, Windows 8.1 Pro, Ubuntu

    Is any program using it?
    I mean is it music that a media player is pointed to, is it being used to back up data?
    Is it mounted in File Explorer?
    You can also try running chkdsk in case it was pulled once when writing wasn't finished.
      My ComputersSystem Spec
  6.    21 Jul 2017 #6
    Join Date : Jul 2017
    Posts : 1
    Win10/win7

    I have a GENPLUS USB-MSDC DISK A USB device with the same problem. There's no "quick removal" setting on the drivers panel. Neither is there a list of tasks

    The only hint I have gotten from "troubleshooting" is that it's an older USB device that might not work with USB 3.0.... and I should plug it into a USB 2.0 port. (I'm not sure if I have such a device.)
      My ComputerSystem Spec
  7.    21 Jul 2017 #7
    Join Date : Mar 2015
    Posts : 175
    Windows 10

    You could use Process Explorer to see what is locking the drive. I find that it's often Explorer that's mucking up the works. I usually open task manager and restart Explorer and the drive will eject normally after that.

    https://technet.microsoft.com/en-us/sysinternals/processexplorer.aspx
      My ComputerSystem Spec
  8.    21 Jul 2017 #8
    Join Date : Oct 2014
    Arnold, MD
    Posts : 29,565
    Triple boot - Win 10 Pro, Win 10 Pro Insider (2) - (and a sprinkling of VMs)

    Quote Originally Posted by bborden View Post
    I have a GENPLUS USB-MSDC DISK A USB device with the same problem. There's no "quick removal" setting on the drivers panel. Neither is there a list of tasks

    The only hint I have gotten from "troubleshooting" is that it's an older USB device that might not work with USB 3.0.... and I should plug it into a USB 2.0 port. (I'm not sure if I have such a device.)
    If you have USB 3.0 ports, it's near 100% certain you have 2.0 ports. 3.0 ports are backward compatible with 2.0 devices. Generally, the 2.0 ports will have a black visible connection, and the 3.0 ports will be blue. The female ends. See if you have one and swap the device.
      My ComputersSystem Spec
  9.    21 Jul 2017 #9
    Join Date : Aug 2014
    Australia, Adelaide
    Posts : 1,566
    W7 Ultimate SP1 (64 bit), LM 18.2 MATE (64 bit), W10 Home (64 bit)

    Quote Originally Posted by vram View Post
    You could use Process Explorer to see what is locking the drive. I find that it's often Explorer that's mucking up the works. I usually open task manager and restart Explorer and the drive will eject normally after that.

    Process Explorer
    Agreed.

    I've only ever had one incident involving Flash sticks.
    However it happens ~50% of the time with USB HDDs (using W7 on my PCs).

    The strange thing was that it was never a problem with W7 until MS released SP1.

    It's gotten worse, as it used to be possible to kill the offending handles in Process Explorer and then eject the drive (without having to kill Windows Explorer).
      My ComputerSystem Spec
  10.    22 Jul 2017 #10
    Join Date : Mar 2016
    Posts : 167
    win 10 HOME

    i know this dosn't help, but if it say's something is using the disk why can't they (the O/S) just say what is using the disk with out having to go to process explorer or what ever if it is file explorer fine just say so
      My ComputerSystem Spec

 
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