Hi Guys, I have a problem. I was surfing this site a couple of days ago when my MacBook suddenly froze up. I couldn't Force-Quit anything or do a soft restart, so I decided to just power-cycle restart (pressing the power button until it shut down, then pressing it again to start up). When I did so, my startup disk wouldn't mount. I should give you a little background: Mine is a MacBook White early 2009, with upgraded 4GB RAM & 500GB 5400rpm Fujitsu HDD. I took the HDD from an off-the-shelf 2.5" external HDD. It has served me well for slightly over a year, and is only now giving me this problem. I have since replaced the original HDD (which I was keeping as a emergency backup, phew) and put the problem HDD in an external FW enclosure. I have run Disk Utility on it to try & rectify the problem. Disk First Aid says the disk is fine, but I just couldn't get it to mount. I thought I'd try to erase it and restore from my TM backup, but after I erased the disk, it still couldn't mount. What's worse, now the disk is apparently not writeable, and I can't even erase it. Disk First Aid is still telling me the disk is fine. I've also tried booting from my SL install disk, but it won't mount the disk to install SL. It is still visible in Disk Utility, but greyed out. Can anyone advise what I can do to recover the disk? I can't really bring it in for a warranty exchange, cos I ripped this disk out of the original enclosure, so the enclosure is now completely busted, and obviously the warranty won't be honored. (Buying the external was cheaper than buying just the internal, and Fujitsu had a pretty OK reputation for their harddisks at that point. Could you blame me?) So any software or hardware (or combination) solution would be great. Worst case scenario is to get a new HDD, but I'd still like to recover the use of this disk somehow.