Thanks again for your reply. Sorry for the delayed response. I have been exhaustively searching for solutions. It is ironic that all my troubles have started since the itunes 12.6.0.100. I have made a fresh itunes library of my 130G plus music and even went as far as to convert all to apple lossless audio in hopes to facilitate syncing of the ipod. I reformatted the ipod with exfat long version with success. I synced the ipod to the itunes library and all seemed to go well until the last few songs. At that point the sync failed and froze up the ipod. It was impossible to eject, even with the command prompt. Now for some reason the disk is inaccessible. The ipod diagnostic menu doesn't activate and putting it in DFU mode just seems to be inactive. Because of my dependency on my ipod I am now searching for alternative measures. ie, purchase an iFlash card, either solo, dual or quad. Since it requires opening, a new battery would be a good option. I am curious if my onboard NOR chip is corrupt. Would it be advisable to upgrade the logic board as well. I would rather invest into physical upgrades since apple doesn't have a platform similar to the one I have been accustomed to. For around 140 euros I can refurbish my ipod classic. Much cheaper than a new unit of similar quality. Thank you in advance for any information you could provide. Mikel