Hello everybody this is my first post here and I would be very happy if anybody would be willing to give me some advice. I have a late 2008 intel iMac and it has been acting strange lately and running very slow. I went out and bought some new ram and it was working great again for a few days. I had a power cut in my house last week and when I went to turn the iMac on it would not get passed the grey screen and would just restart it self after a few moments.I put in the os install cd and ran disk utility but I got a invalid node structure error and it would not repair it. I read up on this and saw from other peoples experiences a program called disk warrior could repair this so I went out and bought this program. The program managed to write a new directory but it could not replace the one on the harddrive as it says the harddrive has a disk malfunction and may have mechanical damage. Now my problem is over the last few months I have been slacking on making backups of my data and I am terrified I am going to lose all my stuff. I am also hesitant on spending anymore money on trying to fix the hard drive as I already spent a good bit of money on disk warrior. I need to know though if I go out and buy a new external harddrive and plug it into my iMac will disk warrior give me the option of moving the new directory onto the external harddrive. I know it is unlikely but is there any chance I can save my current hard drive by moving the directory onto a external one. I would then reformat my harddrive and reinstall os and move the directory over from the external. Any advice on this at all would really be appreciated I have been pulling my hair out with out my iMac the last while and I really do not know what to do next. also I am sorry for the spelling as I wrote this from my iPhone. Thank you for your time.