Roy wrote:
> On Jun 22, 4:04 pm, Paul <nos...@needed.com> wrote:
>> Roy wrote:
>>> Hello group
>>> Recently I was dismayed why my USB drive was not recognized anymore
>>> by window explorer. Therefore if I plug it on the USB slot it does
>>> nothing. I searched the web for some ideas and came from this fellow
>>> which states:\
>>> 'A user of a company I know recently told me the following experience
>>> he had with a USB flash drive. The user traveled a lot and had a
>>> laptop that he used to connect to the company's network when he was in
>>> the office. And he was used to plugging his flash drive into the USB
>>> slot on his laptop so he could transfer files to another machine he
>>> used at home. But one day he came into the office, connected his
>>> laptop to the network, plugged in the flash drive and nothing happened
>>> -- normally an Explorer window would open displaying the contents of
>>> the drive. This was disconcerting, so he opened My Computer and
>>> discovered that the USB drive wasn't there. Puzzled by this, he took
>>> out another flash drive from his pocket and tried it, and this time it
>>> worked fine so he knew at least the problem wasn't with his computer.
>>> He was just about resigned to throwing out his first drive when he
>>> decided to send me a quick email detailing the problem. My immediate
>>> reaction too was that it was that the drive had failed, but then I
>>> thought about it some more. One of the key steps in troubleshooting
>>> problems is to ask what just happened. The drive failure had occurred
>>> after he connected his machine to the network, so could it be an issue
>>> with the network? I emailed back and suggested he disconnect his
>>> laptop from the network and try the flash drive again, and a short
>>> time later I received an email saying the drive now worked!
>>> Then it dawned on me. I told him to remove the drive, connect to the
>>> network and open My Computer again and look for something different.
>>> He did this and told me there was a new mapped network drive that he
>>> hadn't seen before. Aha! The network administrator must have modified
>>> their logon script to map a new drive on users' computers, and this
>>> new mapped drive probably assigned the very same drive letter that
>>> this particular user's laptop had previously assigned to his first USB
>>> drive. I told him to plug the USB drive in again, open Computer
>>> Management, and change the drive letter of the USB drive. He did this,
>>> and right away an Explorer window opened displaying the contents of
>>> his USB drive. Problem solved'
>>> Since I have never done such things these ideas sound strange to me.
>>> Meaning if the drive is malfunctioning it might have something to do
>>> with such and not a hardware fault.
>>> Although I was not using a laptop but just a desktop PC.
>>> I did found the computer management ( local) and had viewed the disk
>>> management on the right pane.
>>> Indeed there are letters that indicates one drive say for example
>>> Drive D and drive C which is easier tounderstand as well asthe Drive E
>>> and F and so forth. Previously the Flash drive was recognized as
>>> Drive G and J as well as drive H for another External hard drive.
>>> But now it does not recognized my flash drive.
>>> What I don't understand is why window explorer does not recognize my
>>> USB flash drive but still do with the other drives.
>>> Early this morning I was plugging these drives to the networked
>>> computer in the internet cafe and immediately it was not recognized
>>> and this kept me worried so when I arrived home I immediately plugged
>>> it and there the flash drive is not functioning or being recognized
>>> anymore.
>>> Could somebody offer me their advice how to sort this out
>>> What is going on?
>>> TIA
>>> Roy
>> Uwe Sieber has a web site, with that kind of information on it.
>>
>> http://www.uwe-sieber.de/usbtrouble_e.html
>>
>> From a hardware perspective, you can verify that the plugged in
>> device is being detected (communicated with), via UVCView program
>> from Microsoft. (Use the upper right hand link, to download an
>> executable for Windows 32 bit OS.) This is an archived web page,
>> as Microsoft has taken down the download page. There have been
>> several versions of programs that look like this one, and so far,
>> this one is the most capable. (Some of the originals, had limits
>> on the number of ports they could handle.)
>>
>> http://web.archive.org/web/200705160...crosoft.com/wh...
>>
>> If the physical layer is working, and the USB device can be
>> enumerated, and fill the window with data, then the problem
>> must be at a higher level in software. (In the picture here,
>> you can see VID/PID 0x0ECD 0xA100 device has been detected, and
>> the presence of the Endpoint Descriptor presumably means a
>> communications path is set up.)
>>
>> http://www.die.de/blog/content/binary/usbview.png
>>
>> For resetting the USB stack, usbman.com has a page describing a
>> procedure to do in safe mode. But this doesn't necessarily fix
>> everything. There are also instances where a driver cache is
>> corrupted, or the registry is locked to updates, that might
>> cause a procedure like this to not fix anything. But in those
>> cases, searching on the exact error text, will likely lead you
>> in the right direction.
>>
>> http://www.usbman.com/Guides/Cleanup...%20Safe%20Mode...
>>
>> HTH,
>> Paul- Hide quoted text -
>>
>> - Show quoted text -
> Thanks !. sounds complicated and Microsoft is cautious about
> installing hotfixes which may not be the solution to the problem
> I did try to follow a certain procedure
> http://www.port-huron.k12.mi.us/tech...leshooting.pdf
> But it when I right my computer- choose manage- Storage- disk
> management
> Then I right clicked the listed removable disk then change drive
> letter and paths
> And want to assign a new drive letter.
> I was given a warning that changing the drive letter might cause
> problem that the hardware connected might no longer run so stopped
> there.
> I also tried to create another drive letter but it says the letter was
> not recognized.
> Creating a new folder needs that you need another path, but when I
> browsed I only find that there are two path- the C and D drive.
> So I got lost here and would need some suggestion from people that are
> familiar with this methods.
> Thank You!
>

Have a look at this page. The Drive Letter Manager
might be able to change a USB drive letter for you.
I haven't used it, because I don't have any USB flash
devices here.

http://www.uwe-sieber.de/usbdlm_e.html

Paul