USB storage restricted using OTG - Xperia Z5 Q&A, Help & Troubleshooting

Hi,
When I connect 2 different USB sticks or 1 TB HDD with Sony otg adaptor to my Z5 and tap "detect usb device" the message "USB storage is restricted. A security policy restricts the use of USB storage" appears. File commander doesn't shows USB storage, but ES file explorer shows and lets work with sticks (in HDD I can't write or create files/ folders but could see contents). In settings--storage tapping "Mount USB storage" causes the same message about restriction but command "erase usb storage" works. Backup app doesn't shows "back up to USB" option too.
What could cause this?

xdeima said:
Hi,
When I connect 2 different USB sticks or 1 TB HDD with Sony otg adaptor to my Z5 and tap "detect usb device" the message "USB storage is restricted. A security policy restricts the use of USB storage" appears. File commander doesn't shows USB storage, but ES file explorer shows and lets work with sticks (in HDD I can't write or create files/ folders but could see contents). In settings--storage tapping "Mount USB storage" causes the same message about restriction but command "erase usb storage" works. Backup app doesn't shows "back up to USB" option too.
What could cause this?
Click to expand...
Click to collapse
well maybe it s FileCommander restriction to force u buy PRO version!
If it s restriction in xperia firmware ES file also couldn't show it!
:good:

might be NTFS file system?

Geeks Empire said:
well maybe it s FileCommander restriction to force u buy PRO version!
If it s restriction in xperia firmware ES file also couldn't show it!
:good:
Click to expand...
Click to collapse
Every thing is the same after I removed udates & switched off filecommander. I think I just will wait for android 6

ninestarkoko said:
might be NTFS file system?
Click to expand...
Click to collapse
No, sticks are fat. HDD is ntfs so ES file explorer just shows files and I can't write.

xdeima said:
No, sticks are fat. HDD is ntfs so ES file explorer just shows files and I can't write.
Click to expand...
Click to collapse
If i understood well you can read/write from the 2 USB sticks using ES file explorer...then, what are the the problems you could not solve?
Maybe the message is related to some special feature (encryption, app installation,...) that is not usable with those devices.
Or, does the sony OTG adaptor/the sticks have a button to prevent Write and only allow Read?
However, If you are rooted, there are a bunch of apps on the store (paragon, ....) that allows you to mount USB sticks and might work better than the bundled software. It still depends a lot on stock kernel functions, though

ninestarkoko said:
If i understood well you can read/write from the 2 USB sticks using ES file explorer...then, what are the the problems you could not solve?
Maybe the message is related to some special feature (encryption, app installation,...) that is not usable with those devices.
Or, does the sony OTG adaptor/the sticks have a button to prevent Write and only allow Read?
However, If you are rooted, there are a bunch of apps on the store (paragon, ....) that allows you to mount USB sticks and might work better than the bundled software. It still depends a lot on stock kernel functions, though
Click to expand...
Click to collapse
Problems are as i said: backup not sees usb storage. USB sticks have no butons Of course it's caused by some app or instalation settings i think. I checked security settings but nothing works. I'm not rooted so I just waiting marshmallow and if it won't resolve - 'll do phone reset or root.. or maybe cyanogen :laugh:

xdeima said:
Hi,
When I connect 2 different USB sticks or 1 TB HDD with Sony otg adaptor to my Z5 and tap "detect usb device" the message "USB storage is restricted. A security policy restricts the use of USB storage" appears. File commander doesn't shows USB storage, but ES file explorer shows and lets work with sticks (in HDD I can't write or create files/ folders but could see contents). In settings--storage tapping "Mount USB storage" causes the same message about restriction but command "erase usb storage" works. Backup app doesn't shows "back up to USB" option too.
What could cause this?
Click to expand...
Click to collapse
just disable xperia configurator in device administrator

Hi,
After update to android 6 problem resolved. By the way I switched xperia configurator off when dealt with my problem with android 5 but things were the same..

Hi,
Sorry to jump an old thread, but I've had this problem on the Swisscom ROM for a while. It originally worked fine, but got disabled with one of the first OTA updates.
I have tried the suggestions here, but no luck so far.
Can I ask which ROM you are using and if it works fine for you now? If so, I'll flash the same localised ROM which I guess will resolve the problem.
Thanks
David

Related

[Q] USB to PC not recognized after installed Vegan-Tab 5.1

hi, I just installed Vegan-Tab 5.1 and i tried to connect the USB to my computers (windows vista/xp) neither of them recognizes the removable disk. gtablet shows USB connected, and on my PC it asked for installing Nvidia Harmony driver, i dont have one so the system failed to install it. Then drive E: shows up, but when i click it it shows "please insert a disk into removable disk E:".
When i had the original TNT ROM although it prompted for install Nvidia Harmony but i can still access E:.
Please help.
Well I think you need to turn on USB storage on the tablet
Drag notification bar down and select files to copy to/from computer
Then enable USB storage
I just installed the same rom and am having the same problem. Can't find a way to get my computer to see the usb, it shows up, but asks for disc.
I'm also having the same issue, PC won't "see" the tablet
also USB thumb drives are not recognized anymore
Missing USB Flash
I'm having the same problem running Vegan 5.11 and it can't see a flash drive plugged into it.
Ed Kinsel
Big Ideas
Finally got BigIdeas installed and I don't have usb either. It shows up on the PC but it asks for a disk. When I (try) to enable it on the tab it just sits and the little icon turns like it's tryin but I get nothing? Any help would be appreciated. Thanks, Howie
turn on usb mass storage on you g tablet then wait about 30sec.sometimes it takes that long for my pc to allow access to the drive(im on win7 64bit).
dootle said:
turn on usb mass storage on you g tablet then wait about 30sec.sometimes it takes that long for my pc to allow access to the drive(im on win7 64bit).
Click to expand...
Click to collapse
No prompt comes up when PC is connect to device.....
Plug in USB................... nothing happens
Also, I noticed that when a SD Card is inserted, the text under >settings>SD Card & Device storage> READS "unmount in progress" after you mount the SDCARD
Now it's working
meandg5 said:
Finally got BigIdeas installed and I don't have usb either. It shows up on the PC but it asks for a disk. When I (try) to enable it on the tab it just sits and the little icon turns like it's tryin but I get nothing? Any help would be appreciated. Thanks, Howie
Click to expand...
Click to collapse
Went into CWM and mounted the USB drive, rebooted, and now it works fine?
Also, when I am in ES file explorer and I am navigated to the /sdcard
it reads ""sdcard unmounted or not present"
got it all figured out......
Still not seeing the flash
Does connect through the mini USB to the internal SD storage...
Anyone know id there's any docs for the Vegan system?
Ed Kinsel
dootle said:
turn on usb mass storage on you g tablet then wait about 30sec.sometimes it takes that long for my pc to allow access to the drive(im on win7 64bit).
Click to expand...
Click to collapse
I am a noobie, how do you enable this on Vegan tab ? TnT Lite had a prompt.
DLP-ROB said:
got it all figured out......
Click to expand...
Click to collapse
I'm having the same problem with the unmount in progress. Can you please tell me how you figured it out? I've done everything including nvflash, CWM, to start fresh and I still am making no progress.
Thanks
I had the same problem. Here is what worked for me.
1. Plug in your USB.
2. You should see the USB icon show up on the top left taskbar.
3. Swipe that taskbar downwards.
4. Click on "USB connected"
5. Click on the "Turn on USB Storage" icon on the bottom right of the screen.
6. Click "OK"
Your drive letter should be mapped on your PC, you should be able to drag and drop files. When you are done, just click the "Turn off USB Storage" icon. You can now disconnect your USB cable.
Hope that helps.
Thank you so much. This is simple once you know it, but I was completely stumped. Am still getting used to the UI.
Thanks! Saved me a lot of possible pain.
Thank you very much!!! Iwas in the same fix!
DLP-ROB said:
got it all figured out......
Click to expand...
Click to collapse
That posting is really helpful (sarcasm). How did you get it figured out?
I'm having the same problem and I'm not getting the USB connected symbol or any other notification from the tablet that the PC is connected.
I'm running CM with the clemsyn kernel 2.6.32.9.

I cannot connect with computer via usb

I Instalet many roms and on everyione was working perfectly before some time i instaled viper 1.3.2 and when i conect it to computer my phone is only charging now i instaled cyanogen mod 10.1 its not working again only charging.
I selected file transfer in settings>storage> menu but still nothing can anyone help me please...
ViperS uses MTP (Media Transfer Protocol) and not UMS mode (USB Mass Storage mode) (as like CM, MIUI, etc).
Just go to My Computer and you'll find an entry "HTC Sensation Z710e". Double-click on it and it will show you your SDCard
silentvisitor said:
ViperS uses MTP (Media Transfer Protocol) and not UMS mode (USB Mass Storage mode) (as like CM, MIUI, etc).
Just go to My Computer and you'll find an entry "HTC Sensation Z710e". Double-click on it and it will show you your SDCard
Click to expand...
Click to collapse
I checked that already i read on this forum about that but nothing of that is working i also tried on diferent computers first is saying unknown device and after that i try MTP and usb mass but nothing ... Something else
What exactly you want to do ?
If you want to transfer files to phone or take backup of SDCard then boot into 4EXT Recovery > Connect USB cable to phone > Select "Toggle USB storage" (or something like that). Your phone will now show up in My Computer as a new drive. You can do whatever you want including Formatting
Good Luck !!!
silentvisitor said:
What exactly you want to do ?
If you want to transfer files to phone or take backup of SDCard then boot into 4EXT Recovery > Connect USB cable to phone > Select "Toggle USB storage" (or something like that). Your phone will now show up in My Computer as a new drive. You can do whatever you want including Formatting
Good Luck !!!
Click to expand...
Click to collapse
Thank you very much thats exactly what i needed if its not working then its hardware problem i guess...
ivanmadzarov said:
Thank you very much thats exactly what i needed if its not working then its hardware problem i guess...
Click to expand...
Click to collapse
have you enabled usb debugging mode also?

USB otg not working on lollipop

As the title stats I cant seem to get it to work or find the appropriate folder in which its located any help would be appreciated
Hit Thanks if I Helped
-_-NAMELESS ROM 1+1-_-
Same problem for me. Installed the full image and it doesn't work. It didn't work when I had just installed it and it still doesn't work after rooting.
How are you using it? Custom kernel? App? Which ones?
Stock 5.0 image with root via chainfire autoroot. Solid Explorer file manager and I can't see the USB OTG
MasterTB said:
Stock 5.0 image with root via chainfire autoroot. Solid Explorer file manager and I can't see the USB OTG
Click to expand...
Click to collapse
Are you supposed to? I thought an app.was needed to mount it. Is ES supposed to do that? Did it on KK
rootSU said:
Are you supposed to? I thought an app.was needed to mount it. Is ES supposed to do that? Did it on KK
Click to expand...
Click to collapse
ES used to (on 4.4.4)
I did notice that my Thermal Seek camera (also USB OTG) works fine with Lollipop, so I guess ES has to be updated.
Yes, I forgot about ES. It does open it. I had been using solid because I like it better but I also forgot that stock Android is NOT AOSP and that was my problem. It does see it now with ES so, problem solved. Also it reads both fat32 and NTFS. too bad it doesn't read exFAT
MasterTB said:
Yes, I forgot about ES. It does open it. I had been using solid because I like it better but I also forgot that stock Android is NOT AOSP and that was my problem. It does see it now with ES so, problem solved. Also it reads both fat32 and NTFS. too bad it doesn't read exFAT
Click to expand...
Click to collapse
That is so strange - I use ES and I am not able to get it to recognize my USB flash drive! Sheeeeeeesh! :crying:
Well we are all seeing strange things with 5.0 For example, root is not working as it should, apps like App Quarantine can't seem to properly disable some system apps or Google Apps, I can't seem to be able to correctly install a recovery and most apps that should allow to do reboot options (like flashify or twrp manager) don't work. My guess is that we'll have to wait a few days until development has matured a bit..
Then, I can use/see/write my USB by otg only with Es explorer without stickmount or I have to use stick mount mandatorily ?
sorry if you give the answer already but did not understand English very well
Always i used stick mount, but it would only need/use ES Explorer
I can only add that on nexus7 (2013) official 5.0 OTG doesn't work either.
I can access external drive through ES or stickmount, but the system itself is 'blind'.
Using custom kernels (e.g elementalX) built for lollipop which in theory should support OTG break stickmount (and still no OTG support, possibly something in OS beyond the kernel) - internal memory is not mounted anymore to /storage/sdcard0. ES still works though.
lolote said:
Then, I can use/see/write my USB by otg only with Es explorer without stickmount or I have to use stick mount mandatorily ?
sorry if you give the answer already but did not understand English very well
Always i used stick mount, but it would only need/use ES Explorer
Click to expand...
Click to collapse
Yes, you can just use ES Explorer to use USB OTG devices. No need for stickmount.
Update your drivers.
Please read here what I did.
http://forum.xda-developers.com/showpost.php?p=56789129&postcount=50
Work fine.
MasterTB said:
Yes, you can just use ES Explorer to use USB OTG devices. No need for stickmount.
Click to expand...
Click to collapse
but in nexus 5 lollipop ?
Because i when connect my usb 8gb Es explorer askme and showme a pop up, and later show a usb1002 but when i want open it is load for ever and frezze the app.
with stickmount nop frezze no load, open fine.
i mean?
Works fine with this app.
https://play.google.com/store/apps/details?id=com.kyuudroid.nexususbotgfilemanager
Yes in 5.0.
I have the google stock image, rooted with CFAR and all I use is ES Explorer to see my USB OTG. You have to be in either NTFS or Fat32 for it to read the drives.
It does show as a USB 1002 like you say and if you click on it it will open a new window with the contents of the drive. That's all I do.
No tweaks or apps to mount the drives.
MasterTB said:
Yes in 5.0.
I have the google stock image, rooted with CFAR and all I use is ES Explorer to see my USB OTG. You have to be in either NTFS or Fat32 for it to read the drives.
It does show as a USB 1002 like you say and if you click on it it will open a new window with the contents of the drive. That's all I do.
No tweaks or apps to mount the drives.
Click to expand...
Click to collapse
Hi all,
I can see on ES Explorer the US1002 tab like you, and if I click on it, I can see the file inside the USB storage, but i can't put other files on the drive, even if I try to create a new file, the app show up a pop up with the message "unsupported operation", instead the copy from the USB drive to the phone is possibile.
This happens since I flashed the Stock Lollipop build.....
Have you tried to copy or create a file on the drive?
Many Thanks! Bye!
Russosniap said:
Hi all,
I can see on ES Explorer the US1002 tab like you, and if I click on it, I can see the file inside the USB storage, but i can't put other files on the drive, even if I try to create a new file, the app show up a pop up with the message "unsupported operation", instead the copy from the USB drive to the phone is possibile.
This happens since I flashed the Stock Lollipop build.....
Have you tried to copy or create a file on the drive?
Many Thanks! Bye!
Click to expand...
Click to collapse
Yes, I get the same message. You can read files, copy them TO your phone but not copy from your phone to the USB OTG. I guess we will have to wait for some developer to patch things or for AOSP roms to catch up...
MasterTB said:
Yes, I get the same message. You can read files, copy them TO your phone but not copy from your phone to the USB OTG. I guess we will have to wait for some developer to patch things or for AOSP roms to catch up...
Click to expand...
Click to collapse
Probably kernel related. Might need to export to usb otg properly. Probably mounted with no permissions. You can check when OTG is plugged in by typing the "mount" command into a terminal emulator
rootSU said:
Probably kernel related. Might need to export to usb otg properly. Probably mounted with no permissions. You can check when OTG is plugged in by typing the "mount" command into a terminal emulator
Click to expand...
Click to collapse
Ehi guys!
I think I found the problem, my usb drive was formatted in NTFS, android can't white on it, but only read!
I formatted in FAT32 and the problem is solved!! I was so stupid
Bye!!

No write access on Marshmallow USB OTG storage

I use FAT32 storage on my USB OTG storage. On lollipop i was able to delete or copy files to the storage but since I've updated to Marshmallow recently, i only have read access.
Any idea how to get around this?
I've tried the stock file manager as well as File Manager app.
I had same problem with mine when I used my mac to format usb, partition map was GUID instead of master boot once i changed that worked ok. Not sure if that's any help to you though.
neopeo said:
I use FAT32 storage on my USB OTG storage. On lollipop i was able to delete or copy files to the storage but since I've updated to Marshmallow recently, i only have read access.
Any idea how to get around this?
I've tried the stock file manager as well as File Manager app.
Click to expand...
Click to collapse
Have you ever turned off USB debugging?
dan7four said:
I had same problem with mine when I used my mac to format usb, partition map was GUID instead of master boot once i changed that worked ok. Not sure if that's any help to you though.
Click to expand...
Click to collapse
I have no idea what GUID or master boot is. But i did format it on Windows using 'guiformat'. Something I found on the web and have used previously many times.
bininga59 said:
Have you ever turned off USB debugging?
Click to expand...
Click to collapse
I just tried that and it didn't make a difference.
Same here, having problems with OTG after updating my S6 to marshmallow, should have read this forum before updating... bummer...
neopeo said:
I use FAT32 storage on my USB OTG storage. On lollipop i was able to delete or copy files to the storage but since I've updated to Marshmallow recently, i only have read access.
Any idea how to get around this?
I've tried the stock file manager as well as File Manager app.
Click to expand...
Click to collapse
I think I found the solution, I noticed that my S6 running marshmallow, when I plug my otg to the phone, I accidentally made the ES File Explorer the default, I can't access the OTG via Samsung's default File Manager. So I went to Applications, go to ES File Explorer, clear defaults... plug my OTG Again, this time don't choose ES File Explorer, if it pops out, cancel it. Then the Samsung's File Manager will now recognize the OTG, and boom, I can now use my OTG properly via Samsung's File Manager... Try it out...
It appears i HADN'T tried the file manager app (i thought i did). That app DOES allow deleting. It's just the stock samsung file explorer that doesn't allow write/delete access.
Problem solved.
Well. It looks like file manager intermittently has write access. Very odd.
It's stopped now. So i guess i did previously try it.
Very frustrating.

Android 7 file manager can't see OTG flash drive?

I have attached a flash drive via OTG to my Blackview BV6000 smartphone The phone sees it and I can used it to read or write data.
The problem is that to access it I have to go through Settings >>>> Storage>>> (I can see the flash drive there). It works fine.
But... when I go to look in File Manager, I can't see the drive at all. File manager only shows me "Internal Storage" & "SD Card" in my phone. It does not show the the flash drive attached via OTG.
This issue matters because I have tried to use a zip compression app to compress some files on an attached hard drive, but that app won't recognize the flash drive either. It can't even see it.
Would anyone know how to manipulate the phone to enable me to see OTG drives in all my apps?
I thought this may be a security measure to protect the phone but I'm not sure.
Any clues?
Thanks

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