Firmware update to os 6.5 breaks SMB on USB connections RN104 #26893300

Well  I think it is only fair that when issues are fixed that thanks be due that they are made public as forums can tend to err on the side of a "moan-fest"

I will start by thanking the member of Support that dealt with my case I hope that I am not breaking any rules by naming them, Quin Hong.  I would also tlike to thank the un-named R&D engineer that was also was involved and all the support staff that were involved in resolving this issue.

Of course in the end it was an "simple" fix In fact it involved a change of order of two lines in a configuration file but tracking these sort of things down can obviously be a nightmare, but they found it.

I was even told what to do. to correct my other units.

And the final "confirmation" was to update one of the OS 6.4.2  Units to 6.5 and edit the file

YES YES YES it works

It still begs the question "why does this only show up in disk's above a certain size", 

(EDIT)  Just been informed that it may be due to the size of the disk that extra delay is required. By changing the two lines that gives enough response time for the disc to be "fully" mounted

I also extend my thanks to all that contributed on this thread and to mdgm who escalated this.

Once I was "in the system " Netgear showed that they can work with the customer to resolve issues 

Not to sour any praise but this is a "bug" in the firmware which I was unfortunate (fortunate for any other users  who this may affect at some stage) to find  and this I still believe the issue  was addressed intially in a less than suitable manner.

Obviously my issue was initially very specific and  Netgear has many many units with operating with a myriad of third party peripherals and disks, compatibility is always going to be an issue.  And there is always the variability associated with the level of "user competence".  Anyway it seems to be resolved and thanks again to all involved

I understand that the change in the configuration file will be incorporated in a later firmware update.

Maybe another unit in a couple of months time!!