Chkdsk went crazy on my 200gb maxtor last month. It spent over 20 minutes fixing supposed errors on the disk. Afterwards I lost some files, but nothing major. The weird thing is that chkdsk is always running on that particular drive whenever I boot up. I read into this about the 'dirty flag'. I tried clearing it through several methods described on google and nothing seems to work. Is this a sign that something is terribly wrong with my drive? I also tried running the Maxtor diagnostic program but it just hangs when it is detecting the harddrive.