Yesterday I was trying to install Mageia Linux along with Windows 7 and Ubuntu 12.10. After several tries I finally installed Mageia and created an entry for the Mageia boot-loader in the Windows boot manager.
The problem is, though everything seems to be working perfectly, when I open Gparted it says that there are no partitions on the hard disk.
Here's a screen-shot:
What is wrong, and how can I fix this without losing any data?