View Full Version : Mass Storage Device

10-11-2007, 12:20 PM
Hi folks, I have a problem in that when removing my Xd camera card from the reader on my PC via the remove safley icon in the task bar, the little green arrow thingy disappears and can only be found again by re-booting. In device manager under usb controllers, I get the following.

"Windows cannot use this hardware device because it has been prepared for "safe removal", but it has not been removed from the computer. (Code 47)

To fix this problem, unplug this device from your computer and then plug it in again.

Click Troubleshoot to start the troubleshooter for this device."

I am unsure of what to do here as the device (I assume this means the card) has already been removed. I have been told that you can remove camera cards and USB drives without having to go via the safley remove function, is this correct? Any suggestions would be appreciated.


10-11-2007, 01:23 PM
I Have a USB Card Reader that does the exact same thing.
If you disconnect the USB Device the "safe way" it will disable the whole reader, unless you tell it to turn off the specific device, Meaning the default will kill the whole device , until you reboot.

Maybe pictures will explain what I mean better.

Here is the reader (http://www.imagef1.net.nz/files/NO_devices.jpg) with no USB / Cards installed, you will see if you double click the USB Mass Storage - it shows the whole Carder etc.

Now if I plug in a Flash Card Which is Drive I (http://www.imagef1.net.nz/files/Drive_I.jpg) I can disconnect this one and not affect the others.

But I just normally pull them out, making sure they are not doing anything like coping of course, and all windows closed.
Done this which this particular flash card for over a year - never damaged it yet :rolleyes:

10-11-2007, 03:32 PM
Thanks wainuitech, thats exactly what is happening here. Must be that I am turning off whole reader instaed of just the drive being used. Seems from your reply that its ok to just close and remove?? Same with camera cards??


10-11-2007, 03:47 PM
Flash cards (like used in a camera) I close all windows, after they have copied or what ever you are doing, then simply pull them out. You are meant to turn them off to be safe , but never damaged one yet.

The USB pen / Flash Drives, those I DO turn off by the safe method.
I have fried USB devices by not shutting down correctly.

One safe way to turn off the flash Cards is to open "My Computer", right click the drive and select eject.
This DOES turn off the drive. Example (http://www.imagef1.net.nz/files/Whole_Screen.jpg)

10-11-2007, 04:48 PM
All clear to me now, thanks.