Hi All, My computer wasn't booting, saying something about drive not accessible so took out HDD and plugged it into another PC, it tried to run chkdsk but wasn't allowed because "corrupt master file table". Tried to access it on another computer and came up with "Disk structure is corrupt and not readable". I have since formatted the HDD, read another post on this forum as to how to recover files and fix the problem but what i really want to know is, WHY DID THIS HAPPEN? And how can i prevent it from happening again? Is my HDD on its way out and need to be replaced? Did i do something wrong cause i only formatted it about a week ago due to viruses... Any help greatly appreciated!