The one that highlighted is different from the one that i've circled. Can someone explain to me why is that happened? I'm searching for the 100^GB more. Originally the HDD contains 290GB.
Computer type PC/Desktop OS Windows 7 Home Premium 64 bit CPU Intel Core i7 950 Quad OC'ed to 3.6 GHZ Motherboard ASRock X58 Memory 12GB DDR 3 Graphics Card Radeon HD 5870 1GB Sound Card Onboard Monitor(s) Displays 23" Acer HD Screen Resolution 1920x1080
PSU 700W Case Coolermaster Hard Drives 1TB WD Blue
Cross check the listings with free Partition Wizard bootable CD which will give the correct sizes when Disk Mgmt doesn't. It can also check the file system for you.