I had a HDD failure on my iMac. It's a May 2011 bought late October last year. The HDD is the basic 500gb. Now I have some data on that drive that I would like recovered which unfortunately wasn't backed up. After complaining to the Apple Store 3 times they decided to give me the drive just to get rid off me HDD recovery procedures are extremely costly, so I'm tempted to try it myself. What happened to the drive? I powered up the iMac in the morning just to hear a big grinding noise. I powered it down. I powered it up again after a few minutes, but same thing occured, so I powered it down and took it to the Apple Store in the afternoon. After booting it in the Apple Store, there was no noise, but the iMac wouldn't boot. The drive wasn't visible from Disk Utility either. What's your guess? Head crash? Most companies quote between £300 and £1000 for data recovery. A drive from Amazon is £45 with super saver delivery and I'll be proficient enough to replace bits inside of it and test. Especially if anybody had a diagram handy. All tips would be greatly appreciated.