Hi all, I purchased a new 750GB hard drive from the Apple store and fitted it myself. I then used Time Machine to restore data from my previous hard drive. This worked fine, but I then wasn't able to back up, it would always get stuck after some time and throw up and error message. I ignored this for a few weeks and backed up only important files using Dropbox. However, I then started troubleshooting the issue more thoroughly and tried to use Carbon Clone Copy to create a clone of my hard drive. This, too, threw up an error message and seemed to point towards a specific file. It would then continue, but make little to no progress. One time when I was trying to clone my drive, it completely froze up my computer. To get away from this, I held the power button to power down my computer. After this, the hard drive wouldn't mount. When I inserted and booted from my OS X DVD, Disk Utility was unable to repair the disk due to a "B-Node Tree" error. I figured that the TOC was damaged in turning the unit off during data transfer. After visiting the Apple store, they suggested that I use Diskwarrior. I installed OS X on an external drive and ran DW 4.4 on 'Macintosh HD'. This brings me to where I am now. It has been running for over 2 days and reports "Speed reduced by disk malfunction: 3,287". I can, however, still move the mouse and the number still ticks up gradually. Does anyone have any answers to the following? - How long shall I allow Diskwarrior to keep trying to rebuild the disk? I know that this varies with computer, but if anyone has experience with a similar drive I would be interested to know. - Do the signs point to permanent damage on the drive? Should I be looking to replace it? Was I sold a faulty drive from Apple? - Do you believe that Diskwarrior will be able to recover the disk? I would be massively grateful for any thoughts and opinions as this is holding up my work at the moment. Cheers!