[Q] How to mount only external SD?

---

Whenever I plug in the phone to my computer via USB, it loads it as two separate drive letters. This is fine and good for the PC side of things.

The problem is that I want to be able to use the phone's external SD as a mass storage device that attaches to a new car's USB port. The car always throws back an "unsupported" error, and I'm betting it has everything to do with the fact that the phone tries to mount the 2 cards. The car just doesn't know how to handle that information.

So, does anyone know of a tweak or setting that would force the phone to only mount one or the other, preferably the external?

I've removed the external SD card and plugged the phone in to the car. It doesn't error out now, but I didn't give it ample time to find music hidden in the internal SD.

That being the case, I still would like to know if there is a way to disable USB mass storage for one or the other without having to shift things around all the time. There's a reason why all of my music is on the external SD--it's a 16GB card and I have a ton of music.

The only way I can think of is by mounting it in clockwork recovery console. That would give you access to the music...but you'd lose the functionality of the phone during that time, so doesn't seem like it would be a viable route for you to take...but I suppose if you wanted to do bug testing to see if your external WOULD mount to your cars usb, that's one way to check that out.

Hope this helps.

I'll give that a try this afternoon. You're right, though, it does defeat the purpose--I'd really like a functioning phone while I drive. I'm sure there's a way to adjust this, I just don't know enough about the inner workings to make it happen.

Hello devitec,

I have the same Problem in a BMW with a Samsung Galaxy SII phone. I have no satisfying solution but I can use below workaround.

The BMW cannot mount both drives, but he chooses randomly one of the two. Because there are no music-files on the internal sd, it gives me an errormessage. On every second try i get the external sd which is browsable like a usb-stick. The album- and artist-informations are not parsed for the BMW-filterfunctions, so i can only choose by directory.

I hope this workaround will also work in your car.

max01001111

P.S.: The Samsung galaxy SII has to be in debug mode to mount without kies-support.

what if you guys try to unmount the internal sd before you connect ur phone to ur car?

Sent from my LG-P999 using XDA App