[standingbear]

@bphlpt

I formatted the 3TB disk from Windows vista 32bit, and the disk was in a USB enclosure. The disk is now a data disk inside a Windows 7 64bit box, with the latest updates applied.
cut the disk into 4 partitions, 750GBx3, plus the remaining one.
mobo is ASRock 960GB/U3S3 FX

[bphlpt]

Did you use the standard Vista built-in Format, or some other software tool? Did you make any format option changes or did you just accept all the defaults? Any reason you didn't just do all the partitioning and formatting in the Win 7 x64 box? Can you try that?

Cheers and Regards

[standingbear]

@bphlpt Yes, I used the format that is built-in with Windows. The reason I didn't use the Win 7 x64 format was because on win 7 x64, the disk would show up as having 746GB instead of 3TB.

[bphlpt]

Almost seems like you're missing a driver or something on your Win7 system.

Cheers and Regards

This post has been edited by bphlpt: 21 December 2012 - 09:40 PM

[allen2]

As it is over 2Tb, the disk should be gpt . As it doesn't need to be bootable, you should already have a device driver to support but perhaps not the lastest one.
After booting on your windows 7 x64, go to device manager, and find the "friendly name" of the wd 3tb (should be WDC WD30EZRX under disk drives) , then in the view menu select device by connection and deploy everything needed to find again the wd 3tb. What you 'll know then is the on which sata controller is connected the drive. Then right click on the device controller and select properties and go to driver tab. You should see the date and the version of the driver then clicking on driver detail will also let us know which file is used as device driver. This driver is most likely completely out of date and should be updated.
For the record, amd lastest chipset drivers are there.
And lastest asmedia sata 3 drivers are there (taken from asus website as asmedia doesn't have an official open support site).

[standingbear]

I can't believe this. Thank you all, especially allen2 and bphlpt. I went to the Asrock's website as well as using the device driver -> update driver from microsoft, which all said I was using the latest driver, but it never occurred to me to check from AMD directly. Yes, it was indeed a way out-of-date AMD SATA controller driver, and now it is seeing the disks without any problems. I am happy and mad at the same time.