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Dale ForgusonFlag for United States of America

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Extend C:\ partition in Server std. 2012

I just finished reading this post; https://www.experts-exchange.com/questions/28159047/Correct-partition-sizes-for-physical-servers-running-Windows-Server-2012-Standard-Hyper-v.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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Dale Forguson
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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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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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Seth Simmons
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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.