Develop Bugs

[Q] I Can't access MicroSD through the PC

Hi. I'm new to the forums and android. Sorry if this is not the correct place to post this.
When I connect my phone to the PC via USB I only see a few folders and none of the media files in the phone. I've tried accessing through Media Link and Windows Explorer and nothing.
Weird thing is that I see some folders and photos, like the photos taken with the RetroCamera Application.
I have been able to access my files before, it just suddenly stopped working.
Any ideas?

Try using different USB [if already did]
Go to your Hardware devices, change the MTP devices drivers to USB drivers manually [update them choose them manually from list]
Hopefully you'll get it working again

First,you should make sure that your MicroSD's file system is OK.

hpzf89 said:
First,you should make sure that your MicroSD's file system is OK.
Click to expand...
Click to collapse
How do you do that?

VanDerFlaxen said:
How do you do that?
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Click to collapse
Can you access the files with your phone's file browser?if you can do that,the sd card might be OK,then you can check the OS.But if you can't,you may have to format the sd card.

this is normal if USB mode is set to windows media sync, its some kind of security feature I think.
you have 2 options:
1. attempt to access via the moto web phone portal as above, you need to set the USB mode to 'motorola phone portal'. but this I find is a bit hit and miss, you can manually connect using this address:
http://192.168.16.2:8080/webfolder
this can be entered into start -> run, in windows explorer, or mapped directly as a network drive
2. go into USB options and change the mode to 'USB mass storage' this will mount the SD card as a proper removable drive and show all the files properly. This option may not be available depending on what firmware is loaded onto the phone though!
to change USB mode swipe the status/menu bar at the top of the phone down, and tap 'USB connection'

hpzf89 said:
Can you access the files with your phone's file browser?if you can do that,the sd card might be OK,then you can check the OS.But if you can't,you may have to format the sd card.
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Yes, I can access the files through the phone browser.
rubjonny said:
this is normal if USB mode is set to windows media sync, its some kind of security feature I think.
you have 2 options:
1. attempt to access via the moto web phone portal as above, you need to set the USB mode to 'motorola phone portal'. but this I find is a bit hit and miss, you can manually connect using this address:
this can be entered into start -> run, in windows explorer, or mapped directly as a network drive
2. go into USB options and change the mode to 'USB mass storage' this will mount the SD card as a proper removable drive and show all the files properly. This option may not be available depending on what firmware is loaded onto the phone though!
to change USB mode swipe the status/menu bar at the top of the phone down, and tap 'USB connection'
Click to expand...
Click to collapse
I've used the moto web portal and I was able to access my files, however, it draggs when moving files. Also, the phone was in USB Mass Storage mode the whole time.
Today I connected my phone to my laptop at the office and even though the Motorola Media Link did not pick up my media files, I was able to access them through Windows Explorer. So I'm leaning towards a driver issue with my home PC.

ah ok, maybe the drivers haven't fully installed, check in the device manager to see of you can spot anything. you could also try changing the usb mode to a different setting then back again, see if that kicks the pc into installing the correct drivers

I re-installed the drivers, but still no go.
What surprises me the most is that I can't access or even see some of the folders in my SD Card. The Motorola Media Link recognizes that there is something in the card, but can't tell what it is.
Googling for days, I found this, but I don't know how to do it or even it is related to my problem:
"Finally i solve the problem. And everything in my ext sd card is back. Problem is emmc folder (means external sd card in cyanogenmod 7) not permitted for write and read.
I use QtADB Terminal for editing the directorys permition.
Step 1: type "su"
Step 2: go to root directory. If you type "ls" and can you see "emmc" you are right position.
Step 3: "chmod 777 emmc" or "$chmod 777 emmc" (for write and read permitted.)
Step 4: Reboot the phone and everythings are back in External Sd Card in EMMC
And Windows detect 2 Storage Drive now. One of 6GB Internal Sd Card, One of 8GB External Sd Card. And i can use my Music player Power AMP.
Everythings perfect for me now. Cyanogen is great ROM but this permision problem should bu fixed. Because i spend three day for solve this problem."

after updating from stock to quarx-CM9, SD card changes are not saved

I have a Defy+
I followed instructions and installed CM9-NIGHTLY-120710-Defy+.zip
I want to install CM9-NIGHTLY-120716-Defy+.zip
The problem is when i connect the phone to PC USB, none of the changes i make (copy, delete, rename...) are actually being made! it seems like it is being made, i can even copy a file to the SD card and run it from there, however, after disconnecting the phone and reconnecting to the USB - all the changes i have made are GONE!
what happened?

Problem copy files to int and ext SD

After 24 hours of search through the web I could not find a solution, many ideas but nothing seems to work, cause I can't find the exact reason:
What is the case? I try to copy a .zip to my device, the process starts and finishes after around 60%, I see the file on PC and device but the size does not fit (it is BIGGER!), md5 also. After a while the file vanishes completely and there is nothing......
R/W permissions should not be the prob, cause I can install apk, can delete files also and paste SMALL files unto the device (as it seems).
Someone with a little help, even without solution I would solve it by myself if I only knew, what's going on. THX :good:
Edit: Tried to connect with Kies3 and it started an update to latest firmware and Kies also failed to install something to storage

Update External storage
Well, internal works fine, but all files copied to ext sd still vanish after reboot and even after disconnecting usb from pc.

Not all files showing up in windows file explorer.

I am using windows 8.1 (tried on 2 different systems with same OS) and viperone rom 2.5.0 on my HTC one M8. (this is a problem i always had even on the stock rom, I thought that a custom rom might fix it but i was wrong).
When i connect my phone to my computer, it gets detected instantly.
It finds the internal sd card but also the external sd card.
HOWEVER, when i go to the internal sd card (So the memory the phone has by default) There is no Android folder. (you know, the one with the .com-facebook blabla files in it)
When i open a file explorer on my phone I can perfectly see all the files and folders on my Internal SD card. But when I use the pc to find these files, allot of them don't show up. Even some files in the ROOT of the sd card are not showing up, and these are simple .png and .log files. AS IF WINDOWS 8.1 DOES NOT DOESN'T RECOGNIZE THE FILES, and therefor decides to just not show them.
- YES i have turned on Show hidden files and folders -
Oh yeah, sometimes these folders do randomly pop up in there on the pc but then the are gone just as fast as they appeared. Also transfering files is very, very slow and gets interupted from time to time because windows "Cannot connect to device" or "Lost connection to device".
I keep wondering, why can't it be easy like an simple usb stick/drive. Those things are just plug 'n play. I recon that android should have this same option but it keeps disappointing me
I remember the good GingerBread days where you pressed the button on your phone CONNECT STORAGE TO PC. And it worked every single time, without delay or other crap. Just like CWM with its USB Storage function.

Look for a folder named "storage", in there you find the folder "emulated" and in there is the folder "0" open it and you'll see all the folders you have on your phone

usb charging will not turn off ??

I'm trying to transfer some photos from my note 7 to a usb stick and it keeps triping back to usb charging??
I have...
in developer options
usb debugging "on"
networking
usb configuration
MTP selected
when I plug the stick in I pull down the notification page when I tap "supplying power via usb"
I try to select "Transferring media files" ( MTP) for 2 seconds in engages then automatically switches back to "Supplying power via usb " ??? I can't transfer anything ???
any ideas on this one ??

skyeking69 said:
I'm trying to transfer some photos from my note 7 to a usb stick and it keeps triping back to usb charging??
I have...
in developer options
usb debugging "on"
networking
usb configuration
MTP selected
when I plug the stick in I pull down the notification page when I tap "supplying power via usb"
I try to select "Transferring media files" ( MTP) for 2 seconds in engages then automatically switches back to "Supplying power via usb " ??? I can't transfer anything ???
any ideas on this one ??
Click to expand...
Click to collapse
Your usb stick is not a computer, it does not need to read your phone with MTP protocol.
The phone should provide power to the USB stick, exactly as it is saying, so that your phone can read the contents of the USB stick.
Get a File Manager like FX to transfer items to and from your USB stick.

I have the same problem. It always says usb charging and I could not transfer pictures to my usb using the usb-c/usb adaptor. I tried using file manager app but I get confused with all these asking permissions and I end up unable to transfer anything. I never had this problem with my S7 edge before. I tried connecting the phone directly to the mac using android file transfer but could not connect. I would really appreciate if someone can give us a more detailed steps on how.

edsol said:
I have the same problem. It always says usb charging and I could not transfer pictures to my usb using the usb-c/usb adaptor. I tried using file manager app but I get confused with all these asking permissions and I end up unable to transfer anything. I never had this problem with my S7 edge before. I tried connecting the phone directly to the mac using android file transfer but could not connect. I would really appreciate if someone can give us a more detailed steps on how.
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Click to collapse
jcadduono said:
Your usb stick is not a computer, it does not need to read your phone with MTP protocol.
The phone should provide power to the USB stick, exactly as it is saying, so that your phone can read the contents of the USB stick.
Get a File Manager like FX to transfer items to and from your USB stick.
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Click to collapse
I tried that I have ES file explorer like "edsol" said it won't mount the stick because it's in charging mode
I tried several time to switch it off of charging mode but always flips back after a few seconds.
if "edsol" has the same problem then I guess it's not just my phone........there must be a fix for this??

I had the same situation, and I had to format the USB stick in "exFAT" to be able to copy files to it. NTFS is supported only for reading, but not for writing.
So check that your USB stick is not NTFS.
FAT32 and exFAT are the same, the difference is that exFAT doesn't have the FAT32 limitations (maximum file size of 4 GB)

Goremael said:
I had the same situation, and I had to format the USB stick in "exFAT" to be able to copy files to it. NTFS is supported only for reading, but not for writing.
So check that your USB stick is not NTFS.
FAT32 and exFAT are the same, the difference is that exFAT doesn't have the FAT32 limitations (maximum file size of 4 GB)
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Thanks...but it is exFat......I did a reformat just incase.......still a no go ??

you probably need some file manager to do what you want, Android sucks when it comes to manual file management.
Anyway I have ES file explorer loaded on my phone, so plugged in USB c to USB2 adapter, put in 32 GB FAT32 memory stick, ES file exp. open up and I transferred couple files from stick to SD, just to test it if it works. It did, but you would have to pay me a lot of money to do it on regular basis, so awkward. I just plug my phone to PC and use windows click and drag to move files around. Now I run into problem, when I was transferring my pictures, couple days ago, F???? Android lock my sd card for no reason (F????? Google is messing SD cards on phones since at least kitkat). I had to fix sd and take write protect off, but I'm sure it's Google not Samsung. Anyway, it works like a charm, just watch out for Google's broken permissions showing it's ugly head.

What File Explorer are you using? Some of them can't write to external storage because of Marshmallow permissions.
"My Files" of Samsung worked for me while "ES File Explorer" didn't work (before root)

I used ES File Explorer, I'm sorry I said wrong in my previous post, I moved couple files to phones DCIM folder, not SD, it's so awkward and I just wanted to see if it works at all, it did, I confirmed the files were moved, before deleting them. So actually I don't know if it would work on SD card, but I would never ever transfer files like that: I would use my pc laptop for direct transfer between SD and stick. So the concept I described works, but as far as permissions to particular folders go, they're so messed up and don't even want to test it again against SD. In theory it should work at least for transfer to root directory, since card is not protected, may not work for transfer to folders created by other programs due to permissions. At some point I may have to root this phone just to fix those stupid permissions, but I haven't used Marshmallow until now, so not sure how broken those permissions are here.

pete4k said:
I used ES File Explorer, I'm sorry I said wrong in my previous post, I moved couple files to phones DCIM folder, not SD, it's so awkward and I just wanted to see if it works at all, it did, I confirmed the files were moved, before deleting them. So actually I don't know if it would work on SD card, but I would never ever transfer files like that: I would use my pc laptop for direct transfer between SD and stick. So the concept I described works, but as far as permissions to particular folders go, they're so messed up and don't even want to test it again against SD. In theory it should work at least for transfer to root directory, since card is not protected, may not work for transfer to folders created by other programs due to permissions. At some point I may have to root this phone just to fix those stupid permissions, but I haven't used Marshmallow until now, so not sure how broken those permissions are here.
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I've tried a few file programs including My Files..........but the usb stick isn't recognized because it stays in charging mode
so can't even attempt to transfer anything....this is frustrating !!