About 2 months ago, I booted up my Macbook Pro (mid-2007) and Mac OS was running unbearably slow, so I gave it a reboot... and then it did what it still does now, it showed the grey/white screen with the apple logo and a little progress bar, which goes away after awhile, but Mac OS never starts up, it stays hung on the grey apple logo and spinning wheel. I tried repairing through Disk Utility on the Snow Leopard Install disc- it gives me the error "Invalid Node Structure" and when I go to repair, it says "Updating boot support partitions for the volume as required." and then "Error: Disk Utility can't repair this disk...etc etc." No luck on doing a restore copy to an external drive, or creating a disk image. I've now run Diskwarrior and it tells me it's successfully built a new directory for the disk BUT "The new directory cannot replace the original directory because of a disk malfunction." So the STRANGE thing is- I said this happened 2 months ago right? I've been using Windows 7 every day on another partition with no problems. AND although the MacHD will not mount as a target disk on my old iBook, I can see all the files through Windows and HAVE done a basic backup of most files (though not a perfect copy, as it's Mac to FAT). They're there. So I'm trying to figure out... A) If I can get a proper copy of the drive, or should I just give up and wipe the drive... losing any new applications and settings from the past 6 months or so (last time I backed up). Optimally, I'd like to get a clone I can migrate from when I re-install the OS. and B) Should I get a new HD, is this one on its' way out, or..?