In an old thread, someone posted advice to try mounting a disk with a bad $mft onto a different computer. (See http://www.daniweb.com/forums/post171363.html#post171363) This worked for me. (That is, on one computer a particular removable USB Sata drive wasn't readable, even after reboot. On a second computer, the same drive is perfectly readable.) What would cause a disk's $mft to be good as far as one computer was concerned, but bad on another computer? Also (more importantly) can I rely on this removable disk being good on most computers in the future? That is, is the "bad $mft" problem on one computer a fluke or is it likely to haunt me when I plug the disk into a random computer?