Flash drive errors after RT-N65U restart

What steps will reproduce the problem?
1. Plug-in usb flash drive to RT-N65U router.
2. Switch off router power and switch it on.
3. Try to copy new files into flash drive connected to the router.

What is the expected output? What do you see instead?
Data format is corrupted. When reproducing above scenario I get errors that 
file is already placed in flash drive (as emty file with the same name is 
created). Then, trying to display flash drive content on TV or PC I get errors 
(unknown error/invalid file etc.) and need to connect flash drive directly to 
PC, diagnose and fix errors (following Widnows suggestions) - then it works 
(until fault scenario is repeated). Sometimes new files ('minidlna.log' and 
'files.db. files are created when problem occurs.

What version of the product are you using? On what operating system?
RT-N65U 3.x.3.9-095
Flash drive Kingston 64GB Data Traveler microDuo USB 3.0 (NTFS)
Windows 7 SP1 64-bit on PC

Please describe the problem as detailed as it's possible.
If you have connection problem, then syslog file is required. (please do
attach it as a file)
Note that if there will be a poor problem description the issue status will
be changed to 'Invalid'!
Described above.

Original issue reported on code.google.com by and...@gmail.com on 23 Jul 2015 at 4:14

derekperrin / rt-n56u

Flash drive errors after RT-N65U restart #1515