Windows 7 didn't recognize my 1TB NTFS partition

Hi guys, I've just installed windows 7 32bit RTM, and i was shocked when i found that my 1TB partition is not recognized by windows 7.
In the Disk Management it appears as RAW and is not accessible in my computer, and whenever i click on the disk icon it tells me that it must be formatted!!!
This partition is working perfectly in windows XP.
It is a Western Digital 1TB sata disk (WD10EACS).
It is a really a shame when the 8 years old windows XP works perfectly with it and not windows 7.
Any ideas??

What is the Partition type ? Is it a NTFS partition ?
I faced a similar problem recently when My windows XP couldn't read NTFS partition but Windows 7 could read it.
Please check the file ntfs.sys exists in you Windows 7 installation at following path:
C:\Windows\System32\drivers

You can refer the following link for more information:
http://securenw.blogspot.com/2009/08/ntfs-partition-showing-raw-inaccessible.html

thx for replying sam, the partition is NTFS as said in the thread title.
And i have OTHER NTFS partitions that works totally ok!

So of course the windows can read NTFS volumes, as the system volume must be NTFS in windows 7.

Try reading this thread for some insight --==> HERE

Tried this, didn't work either.