Solved How to allocate, unallocated space on external hardrive

Teoni

New Member
Hello

I got a new hardrive and I was trying to partition it when I accidentally made it half unallocated. So I now I'm trying to either turn it into a volume or even merge it with the other half, but I can not extend the volume I have as that option is greyed out and I can't turn my unallocated pace into a simple volume as that option is also greyed out. I hoping someone might know what I can do. Any help would be appreciated.

print screen.jpg
 

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townsbg

~~тσωηsвg~~
Vista Guru
Gold Member
You can try reformatting the disk and starting over.
 

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System One System Two

  • Operating System
    Windows 7 Pro x64
    Manufacturer/Model
    Mid 2010 iMac
    CPU
    Quad core 3.2 Ghz Intel I3
    Memory
    8 gb
    Graphics Card(s)
    ATI Radeon HD 5670 512 mb ram
    Screen Resolution
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    Hard Drives
    1 TB
    Other Info
    N/A
  • Operating System
    Windows 2008 R2 Enterprise
    Manufacturer/Model
    Compaq Presario SR5350F
    CPU
    Pentium 2.0 gHZ Dual core E2160
    Memory
    2 gb
    Screen Resolution
    1440 x 900
    Hard Drives
    300 GB

Varlar

New Member
You hard drive is pretty much likely an MBR disk that only supports up to 2TB per partition. You'll need to convert your disk to GPT. If you just want the disk to be a data disk, it is OK. If you want to install Windows on that disk, it requires UEFI support.
To convert an MBR (Master Boot Record) disk to a GPT (GUID - Globally Unique Identifer) disk, you can use Windows Disk Manager or a command prompt. By default Windows uses MBR disks. While all Windows can boot from an MBR disk, you can only boot from a GPT disk if your motherboard has an enabled UEFI BIOS and you have an operating system (Windows 7 or Windows 8) that supports booting to GPT that is installed with UEFI.

The conversion with Windows built in tool will delete everything on your disk including recovery partition. Using diskpart.exe or disk management to convert MBR to GPT, you need firstly to delete this disk to make it shown as unallocated space. Therefore, you'd better backup the needed information before doing it. If you want to convert GPT to MBR without affecting the OS, you need to use third party software, such as AOMEI Partition Assistant.
More information: Diskpart Cannot Extend Partitions beyond 2TB - How to Solve?
 

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Teoni

New Member
Thanks Valar. Your post help me get it all sorted. It never would have occurred to me the problem was basically my hard drive was too big for the software to handle.
 

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