3TB Drive Only Showing 746.52GB Space For Install

[DesertDryDock]

I'm trying to install XP Pro 64 bit on a HGST Deskstar NAS 3TB 7200RPM SATA III 64MB Cache Internal Hard Drive and it only shows 746.52 GB of space on the drive. How can I get it to jump over to the 2TB that I can't see?

 

[theyeti87]

Within Disk Management does it show that there is unallocated space on the drive?

 

[davmazin]

i dont remeber if XP can see or use more than 1tb drives maybe its something related to that?

 

[DesertDryDock]

I pulled the drive out and hooked it to my other PC. In this Disk Management it shows up as two unallocated partitions, the first is 2048 GB and the second is 746.52 GB. Also in my AOMEI Partition Assistant it simply shows 2.73TB of unallocated space.

 

[DesertDryDock]

i dont remeber if XP can see or use more than 1tb drives maybe its something related to that?

I had two TB on my last install

 

[D_Know_WD]

Hi there DesertDryDock,

In case you want to use all the 3 TB of the HDD, it needs to be initialized using GPT. The thing is, that you can do that only if your drive is a storage one, not a boot(primary one). You cannot make full use of 3TB unless your motherboard supports UEFI boot mode in case you want to boot from it.
In case you want to boot from it, it need to be initialized as MBR. In this case though, you will not use the full capacity.

Check these out:
https://msdn.microsoft.com/en-us/library/windows/hardware/dn640535%28v=vs.85%29.aspx?f=255&MSPPError=-2147217396#gpt_faq_xp64_boot
https://support.microsoft.com/en-us/kb/2581408

Cheers,
D_Know_WD

 

[DesertDryDock]

Thanks D_KNOW_WD, Yea I just gave up and wiped my old 2TB drive and installed it on it. I'll just throw the 3TB in for storage somewhere...