My kids have been fortunate enough to inherit my iMac.... while they enjoy it, they also do not pass on when it's slowing down to a crawl.... since there's nothing of importance on it I wanted to just wipe and reinstall as thats what i've always done in the past for a clean slate when it comes to computers (with backups of important stuff)... Well, running Disk utility, i've had some issues... my SMART status is verified and my hard drive shows up just fine... but when i format it (JHFS+) i get the following error: "Posix error: Device not configured" and my entire HD is no longer listed in the table of drives on the left side. I've tried using a live linux distro to format it as well and that fails too with the HD disappearing. I've also fsck'ed it and received a "bad superblock" error but some looking on the net says that can be caused by the JHFS+ format i tried to install (or maybe since it's not formatted). I tried fsck_hfs as well but that starts and stops without error or results.. but again maybe cuz it's not formatted... if i don't format it, the drive is visible with the ok smart status and an unformatted drive. this kinda makes it difficult to install OSX on it. I know it's most likely the HD but it's weird that it was working and poof, nothing.... any help is appreciated..