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[Q] USBOTG doesn't work

Hi to all!
Here's the problem that I have.
After upgrading my Xoom (US 3G) to Tiamat 2.1 Hammerhead USBOTG stopped to work. When I try to connect flashdrive via this cable it blinks only once and that's all. The folder USBOtg is empty -> nothing is shown (but I know that there are files). I tried to format flashdrive to various filesystems (NTFS, FAT32) -> no result.
Another strange thing after upgrade is with MicroSD folder. It shows me only old data. All new one that I copied to it via PC it doesn't show at all. AND!!! PC doesn't see the content of folder with name "external" on Xoom but when I copy there files from PC then Xoom can see them.
May anyone advice any steps to return usbotg and microsd in normal working state?
I tried to re-flash Xoom with previous various versions of firmwares (mods) -> the same situation.
BR, akadimka

akadimka said:
Hi to all!
Here's the problem that I have.
After upgrading my Xoom (US 3G) to Tiamat 2.1 Hammerhead USBOTG stopped to work. When I try to connect flashdrive via this cable it blinks only once and that's all. The folder USBOtg is empty -> nothing is shown (but I know that there are files). I tried to format flashdrive to various filesystems (NTFS, FAT32) -> no result.
Another strange thing after upgrade is with MicroSD folder. It shows me only old data. All new one that I copied to it via PC it doesn't show at all. AND!!! PC doesn't see the content of folder with name "external" on Xoom but when I copy there files from PC then Xoom can see them.
May anyone advice any steps to return usbotg and microsd in normal working state?
I tried to re-flash Xoom with previous various versions of firmwares (mods) -> the same situation.
BR, akadimka
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Click to collapse
Two different issues--if you read the release notes with the Hammerhead Rom, Team Tiamat removed the USB Mass Storage enabling that had been in earlier Rom, due to various difficulties. So that means you can no longer use your PC to copy files into the micro sd card in the Xoom, but you can cop files directly to the sdcard using an adapter or card reader. Your Xoom should still have access to the files on your micro sd card at mnt/external1.
The usbOTG works fine for me but it needs the help of an app like USB Mass Storage Watcher OTG or Drive Mount. Both will work. It also helps to reboot with the drive plugged in the first time if you are having a hard time getting the Xoom to recognize it.

Thanx! Drive Mount helped me with recognizing and mounting flash drive (but only after Xoom reboot with drive plugged in). USB Storage Watcher OTG crashes everytime when I start it with drive connected -> with disconnected it starts normally but won't see any after-connected drives. Ssems that I'll use Drive Mount program
As for MicroSD -> even connected directly to PC and copied some files to it Xoom still sees only old data. Any ideas?
BR, Dmitry
Sent from my Xoom using XDA Premium App

akadimka said:
Thanx! Drive Mount helped me with recognizing and mounting flash drive (but only after Xoom reboot with drive plugged in). USB Storage Watcher OTG crashes everytime when I start it with drive connected -> with disconnected it starts normally but won't see any after-connected drives. Ssems that I'll use Drive Mount program
As for MicroSD -> even connected directly to PC and copied some files to it Xoom still sees only old data. Any ideas?
BR, Dmitry
Sent from my Xoom using XDA Premium App
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Click to collapse
Actually, try checking the folder mnt/external1 (1) as this is HC3.2's official mount point. The Microsd mount point is an artifact of an older Rom.

i am using hammerhead rom with tachi kernel.
yup the usb otg not working.
tried both usb watcher and drive mount.

rohit3192 said:
i am using hammerhead rom with tachi kernel.
yup the usb otg not working.
tried both usb watcher and drive mount.
Click to expand...
Click to collapse
Make sure that you are using a REAL usbOTG cable.

A real USB otg cable? What needs to be special about the cable in order for it to work?
Sent from my Nexus One using xda premium

msavic6 said:
A real USB otg cable? What needs to be special about the cable in order for it to work?
Sent from my Nexus One using xda premium
Click to expand...
Click to collapse
This is where I will suggest that you do some research. Start with this forum and then search elsewhere. Just today I have answered this question 3 times. Search on my name and you will see my posts with your answer.

i am using micro usb male to normal usb female.
cable is gold plated and branded.
but others have also mentioned that usbotg not working after they updated to 3.2
though i never tested on 3.1

rohit3192 said:
i am using micro usb male to normal usb female.
cable is gold plated and branded.
but others have also mentioned that usbotg not working after they updated to 3.2
though i never tested on 3.1
Click to expand...
Click to collapse
Your cable will never work because it is not OTG. OTG has a different pin configuration to allow the Xoom to function in usb host mode. If you are handy with a soldering iron you could make one, but why not buy one, they are availble. Here is my Google search for USBOTG Xoom to get you started: http://www.google.com/search?hl=en&source=hp&q=usb+otg+xoom&aq=2s&aqi=g1g-s9&aql=&oq=usbOTG

Problem with external hard drive since upgrading to ICS EOS WIFI

I haven't been able to get my external hard drive (Samsung S2 750GB NTFS formatted) to mount since upgrading to Team EOS Wifi ICS ROM. I normally use USB Mass Storage Watcher app to mount the drive but although this is recognizing that I have the drive connected and it allows me to click mount it doesn't mount the drive and the option doesn't seem to acknowledge that's its mounted by changing to unmount. TBH I'm not even sure if the drive is already mounted as its location could have been moved in ICS, like the micro SD cards was. I've also tried selecting the USB mount option in Storage settings but this doesn't seem to work either, though it does cause the drive light to flash off and on when its selected. Also I've noticed in USB Mass storage watcher the drive location is listed as dev/block/sda but I've tried checking here and mint/usbotg with root explorer but have had no luck. BTW I'm on build 45 ATM.
Any help appreciated.

Download stick mount for the Nexus and see if that works for you!
Sent from my Xoom using Tapatalk

I have US-Xoom WIFI with ICS , I need to read and write from external hard disk , can you please tell me how, it requires root , and don't know how to root ICS
thanks

ahmoda said:
I have US-Xoom WIFI with ICS , I need to read and write from external hard disk , can you please tell me how, it requires root , and don't know how to root ICS
thanks
Click to expand...
Click to collapse
go here, http://forum.xda-developers.com/showthread.php?t=1242241
it has all the information you need.

z06mike said:
Download stick mount for the Nexus and see if that works for you!
Click to expand...
Click to collapse
This works for me too, on my ICS rooted Xoom. None of the others I could find, including 'mass storage watcher' did.

I managed to sort the problem by using USB Mass Storage Watcher to create a new folder for my drive, after that I could access it fine. Weirdly the drive would not show up before that and I am 100% certain I was checking the correct location.

Any roms work with NTFS external HDD

I have tried EOS and CM10 but system can't recognize my seagate 1.5 TB external hard drive. It shows something connected to the device but can't mount it and can't see the content.
I use external power for the hard drive so I think the power should not be a problem.
Is there anyone have any ROMs suggested that may work with NTFS HDD?
Thanks,
HJ

external hdd to galaxy tab 7.7 stock jelly been

I can get the external hdd to be read by my tab I've hooked it to a USB reader and is powered 5v and it's still saying blank USB drive detected, and I also have the drive in two partitions fat32 and ntfs format Nothin picks up, and have downloaded apps to assist in it to be recognized still Nothin, I'm running stock rom jelly bean 4.1.2.any help out there thanks.

Firstly,make sure you have Root access..
get super user.
download paragonNTFS from the playstore..
Connect HDD to the Tab..via usb otg host dongle
Open Paragon App,grant permissions to superuser..(remember forever)
it will either auto mount your drive to /external sd card or /usb drive or you can mount it manually to where you want to mount it.
The thing here is Ive never tried a HDD with a FAT32 and NTFS partition on the same drive before.not sure if this will give probs but should be able to do it.Try removing any external sd cards and look in location of external sd card for content of fat32 partition.you will always have to mount the NTFS partition with something like paragon it wont auto mount by it self like fat32 does..
Check settings / storage and look for your hdd volume info there
if its not there then you have problems.
---------- Post added at 06:54 AM ---------- Previous post was at 06:44 AM ----------
P.S..
How exactley are you powering the Hard drive?
make sure its not connected to the power wires of the usb host cable
adding power to this seems to upset the host connection for me.
for a 5v hdd you would have to use a powered hub or from any usb as long as there is a seperate power source plug for power and differnt plug for data.
the newer hdds seem to have gone this way now but the older ones dont use this and run power through the data lines power source.you can try use a y cable for that type of hdd but run through a powered hub would be better.
maybe through up a pic of what you are running or some more info eg what drive and app to mount it.stick to paragon it works for tab 7.7.no need for anything else.

This is my set up,I'm rooted on stock though.
Sent from my GT-P6800 using xda app-developers app

[Q] USB OTG won't mount or unmount, but still able to read

Hey guys, just got a Unitek Micro SD Card Reader (SN:131000001778) with a 32gb micro sd card. I hooked it up using Stickmount, I can access the memory card, but when I go to unmount it, nothing happens and when I pull the reader, I get "USB storage unexpectedly removed". I uninstalled Stickmount and loaded USB OTG Helper, when I hook up the reader and hit mount I get-
"Mount started at: /storage/UsbOtgDrives"
"No drives mounted! (code 9)"
When pressing unmount, I get-
"No drives found to unmount!' Of course.
Is there any way to get it to mount or unmount, and am I possibly looking at data corruption if I'm unable to get the drive to mount or unmount when inserting or unplugging it?

Solved: Kinda
Guess I have to use Settings/Storage to mount and unmount usb storage. Still doesn't explain why Stickmount and USB OTG Helper do not work. Is it an Android 4.x limitation?

Stickmount works just fine with my Meenova... not sure why it wouldn't work unless that OTG is not compatible...

ldubs said:
Stickmount works just fine with my Meenova... not sure why it wouldn't work unless that OTG is not compatible...
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Click to collapse
Not sure why, I just got done using it and unmount through settings works perfectly. I just uninstalled USB Otg Helper and it still unmounts fine. I'm not gonna worry about it unless my data starts getting corrupted which it shouldn't now or I use a rom or kernel that doesn't have USB Otg built in which would be a rarity now a days.