It seems I have really messed up my iPod! Apple's support pages don't have any solution to my problem so I've come here. When I connect my iPod to the Mac, there is absolutely no detection - neither iTunes, nor Finder can detect it. The disk of the iPod is however detected in Disk Utility. I think I may have messed up the permissions of the disk, so it isn't "viewable". But, clearly there is an amount of "invisible detection", i.e when I disconnect it the Mac will display warning. I believe the solution to this is restoring the iPod to factory settings. But, this isn't possible, as it can only be recognised in Disk Utility. Should I erase it at Disk Utility, and load the iPod software afterwards? Please advise.