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Windows 7: Is there a max. TB size limit with Windows 7 64 bit machine?

29 Apr 2011   #11

Windows 7 professional 64 bit


Did as you suggested, but still show capacity of 746. I went to format it but when I selected New Simple Volumne, the max size is 764307 MB.

I have a ticket open with the vendor. LaCie want me to exchange for another unit. My belief is that it will not work.
I previously had a 8TB LaCie device that had a similiar problem. Even after the exchange I did not have the storage that I expected.

When I bought my Dell, I paid for extra support. I think it is time that I contact them. From what I have been told, Windows 7 64 bit should be able to accept 3 TB external drive. Maybe it is a DELL restriction.

Any other suggestions?



My System SpecsSystem Spec
29 Apr 2011   #12

Windows 7x64 Home Premium SP1

A screen Management screen shot would be useful.
You could also look at the disk with Partition Wizard
Partition Wizard Bootable CD allows user to boot computer directly to manage partition.

There is a move to larger sector sizes than the standard 512 bytes for larger drives.
What is your sector size?
My System SpecsSystem Spec
30 Apr 2011   #13

Windows 7 professional 64 bit


Be glad to supply a display, which one do you want? How may I find what my sector size is?


My System SpecsSystem Spec

30 Apr 2011   #14

Windows 7x64 Home Premium SP1

Quote   Quote: Originally Posted by stuart253 View Post
Be glad to supply a display, which one do you want?
The complete screen shot of what Windows thinks is on your Lacie from "Disk Management". Partition Wizard may shed some extra information.

Chkdsk x:
where x: is the Lacie drive will give you the sector size reported to Windows.
My System SpecsSystem Spec
30 Apr 2011   #15

Windows 7 professional 64 bit


Sorry for the "shouting" in the title, but it look like the problem is a Dell issue. It looks like my desktop will not allow me to setup an external drive over 2 TB.

No matter what I did, I could not setup external drive to be 3 TB.

Somewhere I saw a suggestion to try connecting to another machine. Used my daughter's laptop and it works, Converted over to GPT and formatted the drive. I formatted the drive and all is well.

Connected the drive to my desktop and it also show up as 3 TB.

Why I do not know. I will be contacting DELL.

Thanks to all who have attempted to hel me.

My System SpecsSystem Spec
30 Apr 2011   #16

Windows 7x64 Home Premium SP1

Please keep us informed what Dell have to say.
My System SpecsSystem Spec
26 Nov 2012   #17

Win7 64
I used Seagate's DiscWizard for a 3TB drive on Win7-64 system

Not sure it will work on non-Seagate drives, but I don't see why not.
Simple GUI, and it handles HDDs over 2.2 TB so they show-up in Win7.
I am just using this as a data drive, not a boot drive.

Support for Disk Drives Beyond 2.2 TeraBytes (TB) and 4K Advanced Format Sectors
My System SpecsSystem Spec

 Is there a max. TB size limit with Windows 7 64 bit machine?

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