iPod Classic 80gb won't sync past certain limit and freezes computer.

I dont know what you mean by stats and where do i find those

You have to follow the blue text link in my post above. In particular the section Check your iPod with Diagnostics Mode.

tt2

turingtest2,

I just read through this thread and while the info it provided was very useful it did not fit my problem entirely.

I have 80gig Classic from 2006. In checking the HD it shows :

Realloc: 0

Pending Sectors: 0

I was running 10.6 on my pro and everything was running just fine. But I had to upgrade to 10.7 and then 10.8. The last OS upgrade is where I started to have the dreaded sync problem except I kept getting the -51 error. After 6 or so hours of doing everything I could think of I managed to get all of my songs synced (5286), not as many as most, after many MANY restarts, resets, re-syncs.

I think I can rule out a bad HD. It looks like a communication error!

Your thoughts?

I was having this problem with my Ipod classic and with adding any songs into Itunes. I have been starting Itunes in SAFE MODE for about a year to make anything work. It doesn't work every time, but it worked for me a lot of the time with syncing and adding new files/music. Hope this trick helps someone. This month, that trick stopped working after an update and now Itunes won't even recognize my ipod. Hope this doesn't happen to anyone else! Apple really needs to stand behind the products they already have on the market!

Same for 160gb classic. I am sick and tired of this nightmare. Apple seems to ignore it as they are phased out models. So what, I have a turntable and a cassette player and they still work.

https://www.ifixit.com/Guide/iPod+Classic+Hard+Drive+Replacement/564

This worked for me 😉 my iPod is working like a new one