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TI 2013 - Extended Capacity Manager not recognizing drive after Win 10 update

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I installed Windows 10 about a week ago and I'm using TI 2013 to handle the 4 TB hard drive recognition. At first, TI 2013's extended capacity manager prompted me to download the Virtual Disk software from the knowledge base in order to recognize the full size of the drive. After I installed it, everything was working fine and I could see all of my data on the drive.

However, after another windows update today, the full size is gone again (only 2 TB of the data that windows recognizes by default displays). Reinstalling/repairing the virtual disk software didn't work this time. The extended capacity manager now says that the hard drive has 1.64 TB of unallocated space (however I know there are files that are in this partition). There is an option available to allocate this space. There is data on this drive that I don't want to lose. Will allocating the space delete the data or will it make it visible? 

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Amir, sorry but ATIH 2013 is not supported for use when installed on Windows 10 as documented in KB 56196: Windows 10 support in Acronis products which states:

Older versions of Acronis products 
Support of Windows 10 will not be implemented into older versions of Acronis products (e.g. Acronis True Image 2014 or older, Acronis Backup & Recovery 11 or older, Acronis Snap Deploy 4 or older), as Acronis development team works on the current versions only. Stable functioning of older products on Windows 10 is not guaranteed.

In addition, if you have a system that is capable of running Windows 10 then you should not need to use the Acronis Extended Capacity Manager function to see your full 4TB drive but there lies a further issue.

Because you have data in the portion of the drive managed by Acronis for extended capacity, you would need to have backup of either that data, or the whole drive that you could restore after allowing Windows to extend the partition to its true full size.

In reply to by truwrikodrorow…

Thanks for the reply. I'm now using a spare PC with Windows 7 on it and with the 4TB plugged into it. However, even on this PC, TI2013 is still showing that this same portion of the HDD is unallocated space. All I want to do right now is just create a back up of this entire HDD. I don't really understand why the extended capacity manger is still not showing my files even on this PC. Am I correct in assuming that pressing the option to allocate the disk space will format that partition before making it visible to me?

Amir, I have never used the Acronis extended capacity manager / have never needed to do so.

I would also assume that taking the option to allocate the disk space will cause any files held in that space to be lost, though I am not sure that any formatting would actually take part, more likely the bounds of the partition would be adjusted and any entries added to the file allocation table ready for when any files etc are added to that new partition space.