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Extend C:\ partition in Server std. 2012

I just finished reading this post; http://www.experts-exchange.com/OS/Microsoft_Operating_Systems/Server/Windows_Server_2012/Q_28159047.html and although it is very similar to my situation mine is slightly different. I have just received  a Dell T320 with 4 1TB drives configured in a RAID 5. OS was pre-installed by Dell. They used BIOS instead of UEFI to install Server standard 2012 so 2.2 TB limit applies. They configured 2 discs; 0 is 1.8 TB, 1 is 950GB. disc 0 was 3 volumes; system 3 GB, C:\ 40 GB and E:\ balance of disc. Just to be clear no VMs are installed yet.
C:\ had 5 GB free so I deleted E:\ volume to create free space on disc 0. I then attempted to expand C:\ but failed, error message is Extend Failed. (gosh that was informative). I checked in Administrative Tools >> Computer Management >> Disc Management, disc 0 indicates unallocated space.
Dell support claimed that C:\ is locked and can't be extended. I tried G-Parted but it didn't see the volumes. Any other ideas before I re-install the OS?
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rettif9
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rettif9
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rettif9ManagerAuthor Commented:
To be clear in Disc management the part of disc 0 that was E:\ is now unallocated space, the other two volumes show up normally.
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Seth SimmonsSr. Systems AdministratorCommented:
any chance you can show a screenshot of disk management?
some things don't quite sound right here and maybe a visual aid would help
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rettif9ManagerAuthor Commented:
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Seth SimmonsSr. Systems AdministratorCommented:
ahh...you can't extend C because that free space resides in an extended partition
in an MBR disk, there is a limit to 4 primary partitions.  you can either have all 4 as regular primary partitions or 3 regular primary and one extended (logical drives can be created inside of it) which is what you have here

if you delete the extended partition (the one in green), then you should be able to extend C the remaining 1.8tb - if that's what you're looking to do.  otherwise, you can create additional drive(s) in that free space of the extended partition
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rettif9ManagerAuthor Commented:
I didn't see the dark green border surrounding the light green. You are absolutely right. I should have remembered that unallocated space has a black header though. It's an OS I haven't used much and I let that trip me up. Good call, the Extend worked. I made C:\ 200 GB then recreated E:\ using the remaining 1.6 TB.
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