I have a late 2009 iMac 21 inch. So I was in the middle of trying to upgrade to mavericks and the install failed and cannot be repaired. I took it to apple to look at it and ran diagnostics and it came to be bad sectors on the drive and gave me a lead time of 3-5 days. I have 85% of important data backed up on an external drive and I was wondering if I could retrieve any data from the old drive. I've heard most users recommend this to recover it http://www.amazon.com/Plugable-Dock...&qid=1384929128&sr=1-1&keywords=usb+sata+dock Any suggestions or tips is greatly appreciated. thanks!