Solved How to access USB Memory Device

Dell / Inspiron 17r
February 27, 2020 at 08:51:04
Specs: windows 10, 2.3/8
I am trying to install a map download on a USB memory drive. I tried the installation using three different computers and three different USB drives and got the same error message each time: "No Device detected, please connect a blank USB memory drive." I did a full diagnostic test on all three of the computers and each showed no problems. I also checked each USB memory drive and they are all working correctly. I even bought a new USB memory drive and tried it but got the same error message. I contacted the company who provided the map download but have not received a reply.

Thank you for your assistance.


See More: How to access USB Memory Device

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✔ Best Answer
February 28, 2020 at 13:24:48
"when the new one worked correctly"
Right click on the drive > Properties.
What file system is it?

"All of the drives that I used were at least 16GB, USB 2.0 or 3.0"
Right click on the drive > Properties.
What file system are they?



#1
February 27, 2020 at 09:23:57
To clarify:

Did you actually manage to successfully download the map?

Is it just a map, or is there an application with it?

What is the source (download etc.) for the map; who/what is the "company"?


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#2
February 27, 2020 at 11:26:55
trvir,

Thank you for your response. I downloaded the map to my PC and it is in C:\Program Files (x86)\mapdownloader (which is 111 Mb in size.) I need to transfer the appropriate files to the USB memory stick so I can insert the stick into a port in my car in order to do the map update. The map came from Subaru.

Thanks again,
Brian W


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#3
February 27, 2020 at 13:31:04
Have you ever downloaded & installed updates before? We have no idea what you're doing or if you're doing it correctly, but here's the Subaru Maps manual that shows the procedure step-by-step.

https://subaru-maps.com/#/usermanual


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#4
February 27, 2020 at 17:35:36
rrider,

Thank you for your response. I have the user's manual from Subaru and get up to step 4.5.2. What's when I get the error message that is shown in red :"No device detected, please connect a blank USB memory device."

If I can't get it to work with the USB stick, is there a way that I could connect my laptop (which contains the download files) to the appropriate port on the car?

Thank you.
Brian W


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#5
February 27, 2020 at 23:16:10
Do you insert the USB drive when asked? Or is the drive already inserted before?
If you insert the drive only when asked, same problem? Not detected?

Are the prices in the manual real? Doesn't come cheap....


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#6
February 28, 2020 at 02:33:47
Hi Brian, I feel your description could be misunderstood.

From what I understand, Map Downloader is an application which is installed on your Desktop or Laptop and when run, downloads and writes a Map Update to a USB Memory Device. The Device needs be a minimum of 16gb and usb2 or 3, see:-
https://www.subaru.com/content/dam/...

Any existing data will be wiped. The update is subsequently transferred to your Suburu.

Why the secret advising most important details - Make, year, model?
Youtube has videos showing how to install for some. eg.

https://www.youtube.com/watch?v=boC...

How did you diagnostically test the usb sticks?
You refer to both drives *AND* sticks which are different devices.

Am concerned if unformatted, as there is a difference between unformatted and blank.
Have you tried just copying a few files to them and reading back?

Good Luck - Keep us posted.

message edited by Mike Newcomb


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#7
February 28, 2020 at 04:20:07
sluc,

Thank you for your response. I inserted the USB drive when asked for and got the “undetected” message. I did not pay for the update; it was included in the purchase price of the car which is a 2019 Subaru Forrester.

Thanks again,
Brian W


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#8
February 28, 2020 at 04:38:02
Mike Newcomb,

Thank you for your response. I looked at the video before I contacted you. I have a 2019 Subaru Forrester. In regard to the USB drive, it is 32Mb, USB2. I formatted the drive and copied flies to it and read them back successfully. My PC is using Windows 10 Build 18362; could that be the problem?

Thanks again,
Brian W


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#9
February 28, 2020 at 06:55:04
To all who have helped,

Out of despair and frustration, I bought another USB drive this morning. I had already tried four different drives and none of them worked with the update even though all of them worked correctly. I was totally surprised when the new one worked correctly and I was able to install the update on it. All of the drives that I used were at least 16GB, USB 2.0 or 3.0. I have no idea whatsoever why the new one worked but it did.

Thanks again to everyone who offered help,
Brian W


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#10
February 28, 2020 at 09:22:45
Sometimes a given usb port can be a problem due to dust in the inner contacts... But usually a quick blast of canned air resolves it. But I get the impression that you would have tested the assorted usb sticks in more than one port of your computer and had the same problem with each - apart from the newest/latest one?

as in I also checked each USB memory drive and they are all working correctly.

Do all of the other sticks still fail to register in your computer, when simply inserted - not using the map application?

Were the assorted sticks already formatted; and/or did you try reformatting them and testing again?

It's more an academic interest/issue now I realise; but always nice to discover the what/why behind a problem if possible?


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#11
February 28, 2020 at 09:43:42
trvir,

All of the USB sticks that failed with the map update worked correctly in other uses, i.e., copying and retrieving files.

I guess this episode goes into the strange but true category.

Thanks again for your help.
Brian W


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#12
February 28, 2020 at 10:42:01
mmm tres odd indeed... One for the "Unexplained" series on Discovery channels?

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#13
February 28, 2020 at 13:24:48
✔ Best Answer
"when the new one worked correctly"
Right click on the drive > Properties.
What file system is it?

"All of the drives that I used were at least 16GB, USB 2.0 or 3.0"
Right click on the drive > Properties.
What file system are they?


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#14
February 28, 2020 at 14:03:21
Johnw,

The file system that worked was NTFS; the file system that did not work was FAT32. I don't know much about file systems: why would one system work and another not work?

Brian W


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#15
February 28, 2020 at 15:02:18
"why would one system work and another not work?"
Too technical for me Brian W, Google it.

In the meantime, Format a fat32 drive to NTFS & test.

message edited by Johnw


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#16
February 29, 2020 at 07:23:23
Johnw,

I formatted a FAT32 drive to NTFS and it worked. Strange that only one file system will work.

Brian W


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#17
February 29, 2020 at 07:30:42
seems this is not entirely unknown...?

https://answers.microsoft.com/en-us...


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#18
February 29, 2020 at 15:10:14
https://answers.microsoft.com/en-us...
Nice googling/searching trvlr.

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#19
February 29, 2020 at 15:38:57
Tak Johnw... but was really taking a tip, a lead, from your question re’ format of usb stick...

Oddly that was the only link specifically mentioning fat32 and win-10 which I managed to find?


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