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Why windows only detects 2TB

HI

I have installed a computer with a hard drive of 4TB, but windows 7 profesional. X64 only detects 2TB.

Thanks.
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dimensionav
Asked:
dimensionav
4 Solutions
 
phil435Commented:
You need to change the partition type to GPT for anything over 2 TB.
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dimensionavAuthor Commented:
Should I do that in Windows or the BIOS?
Do I need to reinstall the operating system?
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phil435Commented:
Go to disk manager in windows. Control panel - administrative tools-computer management. You can right click on the disk and convert to gpt. You can then extend the disk.
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David Johnson, CD, MVPOwnerCommented:
if you installed the operating system on this drive then yes you need to reinstall the O/S otherwise no.
you can change the drive type in diskmgmt.msc (disk management)
System requirements for a boot volume >2TB. UEFI enabled bios, and you boot from EFI boot not MBR boot. Note the default is mbr boot for USB/DVD media
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noxchoGlobal Support CoordinatorCommented:
In Windows Disk Management. Right click on My Computer - Manage - Disk Management.
There right click on an empty unpartitioned drive and select - make GPT. Thats it.
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rindiCommented:
If your PC doesn't have an UEFI BIOS, then you won't be able to convert it to GPT and boot from it. If that is the case, you should install Windows to another smaller disk, and use the 4TB one as a 2nd data disk. Besides that, if you already have data on it, and you convert it to GPT, you loose all that data, so make sure you have your backups.
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Seth SimmonsSr. Systems AdministratorCommented:
does the system (at bios level) even recognize or support a 4tb drive?
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nobusCommented:
if there is data on the drive  -backup first - you may loose the data!
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