Ipod as "disc" is not recognized

Ok I was having the same problem so i called apple and they wanted me to pay 129.00 to fix it but i got it on my own and its simple and works screw apple for this. Ok so here it is locate ur apple ipod in cumputer and right click it and format now after format unconnect it and do a reset holdin the menue button and the center button down together after it resets hit play button fast repeating untill u see english setup or whatever u speak reconnect it open itunes and it will show up as currpt data then it will make u restore it then it will work on windows 8 u will lose all data on ur ipod thoughso i suggest backing up your files this is the only methed after 5 days of research iv found to work. I hope everything gos well for yall.

https://support.apple.com/kb/dl1614?locale=en_GB windows xp version. remove all of the one that dont work and install this one.

trying to going in and doublue jump it or you may need to take all of them off the itunes and start over i keep 4 diiferent itouches and this has happened before so try that and see

From Apple Website 1. Restart your computer (yes, you have too)
2. plug in your ipod touch (it should have the usb cord and itunes picture on the screen)
3. open itunes.
4. itunes will recognize the ipod. just ignore the message, and then hold down the home and hold button (on the top) for about 10 seconds, and after you count to 10, release the top hold button, but still holding home.
5. itunes will pick up the ipod, and once it does, release home.
6. Now click restore, and everything should work fine.
(if problem persists, try turning off firewall, and close all other programs)

If you haven't already, Uninstall your itunes and download a clean version.
install the clean version of itunes and try your ipod again.
you can get a clean version at www.apple.com/itunes/

It appears your install is corrupt.
also have you updated your touch recently.
if it is jailbroken you should be able to update it to a newer version.
If your version is to old, it maynot be compatible with the newer versions of itunes.
They are constantly trying to thwart the jailbreak and unlocked ipod and iphones.

Check your version and update to something newer if the re-install of itunes doesn't help.

That Means Ur Device Has an "ERROR" For Sure -
U Should Get it To Apple - It shows Yellow Sign in DM -
Sure U have an Error - Why Dont U Try by Formatting Ur PC-
Then ur Device n Finaly See if it Works -

redownload itunes

install itunes http://www.apple.com/startpage/

From what I understand, iTunes is not recognizing the iPod, because Windows does not recognize it. Choose to install the driver, set it to search for a driver in "C:\Windows". It should find a USB Mass Storage Driver, an iPod Driver, and a USBusEnumerator. Choose the iPod Driver, and if that doesnt work, try the USB Mass Storage Driver, and then the USBusEnumerator. If Vista gives you a memory error, reboot your computer and try the iPod Driver again.

Maybe radical but this worked for me.
My computer-select ipod,Right click and format disc (fat 32)
Once refomatted plug in to computer and start Itunes.
Click on Restore to factory settings, At the end of that you will need to plug it briefly into an ac outlet.
Reconnect ti computer and start Itunes.
Sync with library.
This worked for me after trying everything else I could fine failed.

My error when I ran diagnostics said "one or more sync tests failed."