Unable to access external hard drive

I'm having the same issues both on my Samsung Series 9 laptop and a MacBook Pro bootcamp setup after installing the AU. My two external NTFS-formatted ADATA drives (USB 3.0) are recognised as RAW and fail to mount. My Transcend NTFS-formatted drive (USB 2.0), however, mounts correctly.

All the drives are accessible and mount correctly on OS X.

If I have my External HDD Turned on when I start this 1607 W10 - I get a Screen with that little blue circle going round and round till the end of time and W10 cannot LOAD up.....I have to turn off my ext hdd!

    PLEASE MS HELP...............................

PS - tried to write Paul Sey as someone asked me to - but it was just posted right here in this thread

ok folks like I said, we know of issues where the external (or some internal) hard drives which were working fine on prior version (<1607) fine, but after the Anniversary update 1607, they are either inaccessible or show up as RAW in disk management. We are working very actively to understand these issues and analyze the data we have. We are making good progress.

Meanwhile, all folks who have such an issue, can help us by providing some information about your disks.

We have diagnostic tools that can get metadata information from such affected disks.

Paulsey is an admin of this forum and he can contact you with private messages.

I will let PaulSey know to reach out to folks on this thread.

If you are willing to provide us data, that will expedite in understanding the breadth of issues and help us fixing all scenarios.

Thanks for your help with this and appreciate your working with us.

I am having this same problem with external Western Digital 1TB USB drive.  Happy to provide any info to resolve this.  Send me info on how to provide this at *** Email address is removed for privacy ***.

Thanks.

Lu

Lu, email address are removed for security/privacy concerns from the thread.

For all, I have reached out to Paul and look out for a message from him.

He will send out a tool, please do run that and send him back the results and we will analyze that data.

Thanks again!

THANK YOU!    Please tell him I'd be GLAD to Help with this! 

   My Problem might make that impossible though.....once I turn on the External HDD, W10 takes off

spinning it's wheels and I can't do anything like pull up this or that etc.

    HOPE I can help though!

Michael

Hi guys, im affected too, and id like to help.

What should i do to start helping?

I cant read any pen drive i have here. Everything was working but now, i got this..

For pete's sakes, I have this issue too. Utterly ridiculous.

500gb WD My Passport 0740

USBSTOR\DISK&VEN_WD&PROD_MY_PASSPORT_0740&REV_1003\575843314139314E38353739&0

It's not just the AU that has this problem. I'm still on 1511 and every time KB3176493 update gets applied I have to roll back because my D: drive disappears. My D: drive is a two disk RAID array, as is my C: drive operating from the same RAID controller on the Dell motherboard.

I haven't received the AU upgrade notice yet but have tried a manual upgrade using the Media Creation Tool. This fails with a message that a piece of software needs uninstalling but doesn't tell me what software. I haven't tried a clean install using the MCT yet.

With regard to the issue of the cumulative update KB3176493  also having a similar problem. When that is applied to my PC one of my internal (RAID) drives disappears.

When I try to apply an in place upgrade to the AU edition the process fails with some software being found that needs to be uninstalled, but doesn't tell me what software.

I have now tried a clean install of AU and the installer can find NO disks on which to install even though both RAID arrays can be seen in the current version.

I am having the same issue WD 1TB hard drive now not recognised and displays RAW.

Please help fix the issue