[Q] How to switch internal and external mount points for usb mass storage ONLY? - Android Q&A, Help & Troubleshooting

Hello guys,
I bought a new radio for my car with usb. I connected my phone as mass storage and it found files on the first partition (internal sd) but not on the second partition (external) - so I would like to switch these around or have some other workaround to get the radio to play the files from the external instead, since thats where all my mp3s are located.
I just want to switch the partitions mount points when they are connected through usb mass storage, not for normal usage.
Anyone got an idea where to look?
I am rooted obv and know how to edit config files or use terminal, just need a hint where to look or maybe someone else knows how to exactly this already?
Please halp! (I will release a guide too if there is none yet for this - I haven't found .. all the guides are for full switch of internal and external only, not just for mass storage mode)
Or would switching to MTP help this? I fear the radio won't notice the phone at all then anymore - and i fkin hate mtp.

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[Q] USB Connection

Hi all,
Been searching for a while but i cant seem to find the answer, im trying to make my phone appear on my pc so i can recover some files i accidently deleted, the problem is it will only show up as the storage card, i can get the phones memory to show up but only via active sync, so im just wondering is there a way to make the phones internal memory appear as a removable drive so i can run a recovery program on it?
Cheers
lukejenks101 said:
Hi all,
Been searching for a while but i cant seem to find the answer, im trying to make my phone appear on my pc so i can recover some files i accidently deleted, the problem is it will only show up as the storage card, i can get the phones memory to show up but only via active sync, so im just wondering is there a way to make the phones internal memory appear as a removable drive so i can run a recovery program on it?
Cheers
Click to expand...
Click to collapse
Not that I know of. Can you not run it via active sync?
or maybe vise versa?
When connecting as a mass storage device, the OS on your desktop/laptop takes control of that "removable disc" (can't access it via the phone). Only sd card - external storage can be available. I presume that the inner storage must be maintained by the phone at all times, when turned on.
You can however make a backup or modify files within the inner storage with a file explorer installed on your device (Resco explorer for example). Just make adjustments, to view hidden and system files.
I wouldn't advise you to delete or modify critical system files tho...
Sent from my HD2

[Q] CM9 4.5.1 Atrix 4G SDCard issue

I am running CM9 4.5.1 with GApps v12 on an Atrix 4G. The issue I am having is that when I connect via USB cable to my XP system, my PC detects the two sdcards (internal and external) but I can not access either one of them..."Please insert disk into drive" like they are not formatted.
I did find that the external sdcard is now being seen in the phone as folder EMMC and both of them have data so I don't think it is a format issue.
I have tried to connect via USB using the MTP and Mass Storage Option and rebooted the phone both times after the change was made. Neither attempt worked.
I have searched through the forum as best I could but with the CM9 thread pushing 1000 pages, I'm not sure if anyone has come across this. If so, what was done or are there any suggestions out there? Thanks.
Never mind, I figured it out after installing new USB drivers from Moto and trying everything else. Found out it was a simple/stupid oversight on my part. So if this happens to anyone else....
Even though I had Mass Storage enabled in the settings, when I connected the phone via USB to my XP Pro Pc, I had to pull down the notification bar, select USB storage, and turn it ON. I guess by default it is turned off. Once that was done, I am now able to access the sdcards on my PC.
I did find during all of the research and trial/error that the sdcard-ext is now the sdcard and the sdcard is now emmc in the folders. I believe there is a way to change this (xda thread) but I can live with the way it is.

Is there a Mod for mounting internal storage as UMS?

Before anyone says that this question has been asked, I'm coming from another angle. I've searched; I know it's only MTP because of Google. However, if in TWRP I can easily mount my internal storage as USB Mass Storage. So is there a way we can use the same approach TWRP is using to implement in the ROMs?
Would it be possible if a dev could mount the internal storage a second time to another mount point as a Mass Storage device solely for transferring files? I don't know if this is even possible but just throwing it out there. I haven't played in Linux for awhile but I'm going to get back in to see if I can contribute at all - if it's possible of course =)

How to mount storage?

Im trying to add some music and ringtones to my One, but cant figure out how to mount the storage to transfer from PC. What am I missing?
Alright after some searching I found mass storage isnt part of 4.1 JB. I moved the filed I want via dropbox, now to figure out how to make them visable for use by the phone...

UMS on Android 4.3 gives "Please insert disk into removable disk"

Hello,
When I updated my S3 to 4.3 from 4.1.2, it was terrible. It was very laggy, my screen didn't show when pressing the Power Button or the Home Button, and I thought that resetting to factory might fix it. Well, I was so desperate to make my phone work better that I didn't realize that all my files were on the internal storage, I don't have an SD Card. So, I've lost everything.
Now, I'm trying to recover some photos, but I can't connect my phone as USB mass storage to use a recovery soft on Windows 8. I rooted my phone, installed USB Mass Storage Enabler app, but it shows two drives (H: and I, but I can't access those. It gives me "Please insert a disk into Removable Drive (LETTER"
Please help, I did everything I found on forums, but still nothing. Those files might be lost, but now I have another battle.. Making my phone available in Mass Storage.
And by the way, it still works terrible with 4.3. Hate it so much!
Have you installed USB drivers ???
Have you read the stickied storage/ recovery thread ??
bughy said:
Hello,
When I updated my S3 to 4.3 from 4.1.2, it was terrible. It was very laggy, my screen didn't show when pressing the Power Button or the Home Button, and I thought that resetting to factory might fix it. Well, I was so desperate to make my phone work better that I didn't realize that all my files were on the internal storage, I don't have an SD Card. So, I've lost everything.
Now, I'm trying to recover some photos, but I can't connect my phone as USB mass storage to use a recovery soft on Windows 8. I rooted my phone, installed USB Mass Storage Enabler app, but it shows two drives (H: and I, but I can't access those. It gives me "Please insert a disk into Removable Drive (LETTER"
Please help, I did everything I found on forums, but still nothing. Those files might be lost, but now I have another battle.. Making my phone available in Mass Storage.
And by the way, it still works terrible with 4.3. Hate it so much!
Click to expand...
Click to collapse
Unfortunately I think USB Mass Storage in the way it is implemented in 4.x for the moment can only share the external SD, the internal one is never visible.
IMHO the only approach to recover "something" is to get an external microSD larger than the internal partition and create a block copy (with dd under adb in CWM/Philz recovery for instance) of the entire "internal SD" partition - that one will be an EXT4 (Linux) partition) and there is a very, very small chance that you might recover some stuff from it (I doubt but who knows).
Yes, i have the Samsung USB Driver for mobile phone (1.5.29.0)
No, didn't read the storage/recovery thread.
Oh well...
Such error happens if transfer breaks unexpectedly. Think what file did you send lastly and delete it, it should fix your issue.
If you can't remember or it did not, formatting your external sd card will fix it for sure.
JustArchi said:
If you can't remember or it did not, formatting your external sd card will fix it for sure.
Click to expand...
Click to collapse
I don't have a sd card.
bughy said:
I don't have a sd card.
Click to expand...
Click to collapse
Ah, you're talking about internal one.
Well, then your magic program doesn't work properly. Perhaps you could try boeffla kernel and it's UMS.

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