[Q] Issue with USB Mass Storage

[lardo5150]

Last night I was getting ready to do my first root. Was watching the syndicate video, following along.

One thing I noticed last night, is when I plugged the phone in for mass storage, to copy the files to the sd card, I kept getting these two errors.
First, when installing the drivers after plugging the phone in, I was getting this cdc failed. You can see it in this picture...
http://i11.photobucket.com/albums/a183/lardo5150/cdcabstract.jpg

I also kept getting this "scan to fix" pop up for the M drive (my phone).

When I turned on USB debugging on the phone and plugged it in, it seemed fine, except I could not access the M drive on my computer, I would get this error...
http://i11.photobucket.com/albums/a183/lardo5150/insertdisk.jpg

I did some search and decided to try what another user tried, I formatted the sd card.
I then plugged the phone back in, and did not receive the "scan to fix" errors anymore and could access the SD card with no issues, but I could not access it still while in debugging mode.
Is this by design?

Samsung drivers are installed. Got them straight from the samsung site.

 

[gtuansdiamm]

No yiu should be able to play with your sd card wgile in debugging

Did you turn on mass storage after usb debugging?

Sent from my SPH-D710 using xda premium

 

[KennyG123]

I couldn't access the mass storage in USB debugging for a little while. It turned out my drivers got slightly corrupted. I could do everything else but that. Went into Control Panel with USB Debugging on and found the driver listed as samsung android in USB in Device Manager and hit update driver and let it get it from Windows Update.

 

[lardo5150]

I couldn't access the mass storage in USB debugging for a little while. It turned out my drivers got slightly corrupted. I could do everything else but that. Went into Control Panel with USB Debugging on and found the driver listed as samsung android in USB in Device Manager and hit update driver and let it get it from Windows Update.

I will try that this afternoon.

How about that cdc? Any reason why that is failing?

 

[lardo5150]

Same thing.
Says the latest driver is installed.
It never gives me the option of choosing charging, mass storage, tethering like it does when debugging is off.

Any ideas?

 

[lardo5150]

Ok, so I found this some other forums.
Seems stupid, but I had no clue.

With my phone, with debugging off, when you connect the USB, it asks you what you want to do.

With debugging turned on, it does not, you have to tell it. Below is what I found....I feel dumb..

"Okay, so if you are freaking out, or can't figure out why your new Epic isn't being recognized by your computer, calm down. Some of you are probably already searching for drivers. Ya I already went through that freak out when I got my Vibrant. Okay, to mount your phone, and have your computer recognize the internal/external memory, do this:

Connect your phone to your computer via USB. Give it a few seconds.

Next, PULL DOWN your notification bar.

Next, tap your finger on "USB CONNECTED"

You then get a message asking if you would like to mount. Tap "mount" confirming you would like to do so.

Enjoy, your computer should now recognize the internal/external memory."

 

[sapperpipo]

Last night I was getting ready to do my first root. Was watching the syndicate video, following along.

One thing I noticed last night, is when I plugged the phone in for mass storage, to copy the files to the sd card, I kept getting these two errors.
First, when installing the drivers after plugging the phone in, I was getting this cdc failed. You can see it in this picture...
http://i11.photobucket.com/albums/a183/lardo5150/cdcabstract.jpg

I also kept getting this "scan to fix" pop up for the M drive (my phone).

When I turned on USB debugging on the phone and plugged it in, it seemed fine, except I could not access the M drive on my computer, I would get this error...
http://i11.photobucket.com/albums/a183/lardo5150/insertdisk.jpg

I did some search and decided to try what another user tried, I formatted the sd card.
I then plugged the phone back in, and did not receive the "scan to fix" errors anymore and could access the SD card with no issues, but I could not access it still while in debugging mode.
Is this by design?

Samsung drivers are installed. Got them straight from the samsung site.

I had the same issue with my epic, try using a different usb cable, the one for the motorola photon resolved all the issues I had with connecting to the computer, I found out thru experience that the stock cable when using windows 7 kept giving me the same error..

Sent from my MB855 using XDA App

 

[rando991]

Also, I've had success with rebooting both the phone but especially rebooting the computer and plugging the phone back in. Try a different USB port, some folks have 2 SLOW USB ports for mouse and keyboard (mine are in the back lower left...the fast ones are on the right and in front). Most folks have better luck trying rear USB ports (although I don't know why). First, try the computer reboot though...