problem with otg

[kdo]

Hi every body I have a problem with my otg connection when I connect flash drive or hard drive to my phone its say flash is damage require format and whe format completed its say this again and its format to exfat
I Tried 8 and 64gb flash drive and 2tb hdd drive(wall powered)and ntfs-exfat and fat32 but its not working and try media importer too(I test this devices with s3 and all worked flawlessly)
How can I fix this?
And is there any way to read ntfs drives with out root?(just read not write)

And I'm sorry for my bad English
Thank you

[Rickard]

Sorry to hear that you have issues connecting flash drives to your phone.

Would it be possible for you to test if the same thing happens with another OTG adapter? What happens if you connect a mouse or keyboard to the phone using the same adapter?

[kdo]

Thanks for your answer
I haven't any other adapter right now but I connected a mouse and it worked fine
And there is the same problem on Xperia z too!
As. I said this adapter works on the s3

[Rickard]

I would suspect the OTG adapter in that case even if it works with your S3. I doubt that you would get the same issue in both your Z and Z2 or with 3 different drives.

But to make sure that there's nothing wrong with the partitioning you could try removing the partition on one of your USB drives and create a new primary partition formatted with either FAT32 or exFAT. Depending on what operating system you have you may need to use a 3:rd party software for that like MiniTool Partition Wizard or similar. Also note that doing this deletes all data on the drive so make sure you don't delete the wrong partition.

[kdo]

Thank you so much I'm sorry I didn't see your reply
I deleted partition and created a new one with fat32 format but it didn't work
I installed nexus media importer v4.4 and it worked fine And I downloaded files without problem but still I can't write
Do you have the same issue or see somebody else have?

[Rickard]

It works fine for me and i've tested several different USB-drives. I can move/copy files from the both the internal storage and my SD card to the USB drive using the preinstalled app called File Commander.

[kdo]

Thanks again you are on stock rom or custom rom?
What build number?

[Rickard]

This is our stock software. On Z2 i tested with 23.0.1.A.0.167 and on Z i used 10.5.1.A.0.292.

But i've used OTG many times before so it works on previous versions as well. I often use this method to copy backups from one phone to another.

[kdo]

Thank you
Ok so why i have this problem?
Should I buy another adapter?
Is there any chance that my adapter be the cause of the problem?(it's worked with nexus media importer)

[Rickard]

Yes, i recommend that you try this with another adapter. As it happens with two different phones and 3 drives i have a hard time seeing any other cause for the issue assuming you haven't modified the phones software in any way.