Can't see spanned 3tb drive after Win10 upgrade

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Hi, I upgraded to Windows 10 today (decided I wanted the free upgrade) I seem to have the same problem with 3 terabyte and over hard drives that other people are reporting.  I had a Seagate internal hard drive that I was using as a data drive, mostly for DVR videos.  I couldn't format it as a 3tb drive, so I formatted it as 2 partitions and set it up as a spanned NTFS volume.

After the upgrade, the drive doesn't show up in File Explorer.  I can see the 2 partitions in DD12,  but they are labeled "Simple/Spanned - Failed"  Is there a way to set the logical drive in Win10 so that it can read the spanned volume the same way as Windows 8?

If it can't be done I have a few (bad) options:

I have a previous install of Win7 in another unused hard drive in the computer - I can dual-boot to Win 7, do a full backup of my files, then go back to Win10 and reformat the data drive for the Win10 system.

I can create a new partition on my C: drive, recover the True Image 15 backup I made before the upgrade, dual-boot, full backup, yada yada.

Obviously, I'd like to avoid having to go to extremes like this to recover the drive - if somebody has a good solution to make a spanned drive readable I'd love to hear it.

Fri, 07/29/2016 - 02:01
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mvp

What does disk management show for the drive? Although it doesn't show up in Windows Explorer, it may show up in Disk management and need to have a  drive letter manually assigned.  Or, it may show offline and need to be brought online.  Or, if it shows up in disk management as a foreign disk, you should just be able to right click and "import foreign disk" (hopefully).

Probably not related for you since this mostly applies to Windowx XP, but a few other threads revealed that some older hardware systems are incapable of viewing anyting more than 2TB.  Acronis had provided a custom driver in 2014 and earlier known as extended capacity manager which allowed the OS to use disks larger than 2TB to their full capacity, and even allowed these systems to be able to install the OS to them and become bootable.  However, Windows 10 is not compatible with earlier versions of Acronis , and as a result, the extended capacity manager driver may no longer work with Windows 10. You seem to be using Windows 7 and Acronis 2015 though, so doubt this is the problem in this case, but thought it was worth mentioning. 

Fri, 07/29/2016 - 03:11
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truwrikodrorowrelupicugojestutroclulachosaswunuhospikigawakijosaswenomaruclojeueclikaspedrubewidebrisubrohutrurifruuagothunugekedrumucisiuobrobrecrupeslapuswosluprothethibakaslechurathikucli
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Thanks for your reply - I have a screen cap of my readout from disk management that shows how I'm set up at the moment.  You'll notice that when I right-click the inactive drive it gives me the option to "Reactivate Volume" - would it be as simple as that?  I'm checking because I'm just a bit afraid of somehow re-formatting or corrupting the volume and losing everything.

Also, is it possible to convert the drive to a non-spanned volume using one of Acronis' products?

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Sat, 07/30/2016 - 01:40