Previous 1 2 3 Next 98 Replies Latest reply: Mar 22, 2016 8:11 PM by turingtest2
KaeSun Level 1 Level 1
Ok, so I had been having some problems with my iPod in that when I tried to connect it to my computer, iTunes would freeze, "My Computer" wouldn't see it, etc. So one of the things I tried to do to solve this problem was see if there was something wrong with the iPod itself. I currently have the 80GB silver iPod classic. I reset the iPod using the menu and action buttons, and then put it into diagnostic boot with << and action button. I first selected the auto test, passed the quickscan, passed the keypad test, passed the wheel test, then the hold switch test comes on. I turn the hold switch on, then off, and test detects it with the 0 and 1, then hit menu to continue. Then the HP detect test, I plugged in the headphones until it said 1, and then uplugged them. Pretty much, all you do to go through these tests is do what it says so that it can read that the function is there, and then read that you removed that function, such as the HP (headphones). However, now I get to the Accessorize test. Plug in the USB cord to a power source (computer or wall outlet works) and USB_DETECT=1, and then to 0. But then it asks me to please plug FW. Which I'm assuming is FireWire. But isn't that usually used for older models? I don't have and never have had a FireWire cable for this iPod. How to pass this test? All other forums I've looked up concerning this message, most people were not trying to do the diagnostics test and had no clue what it was and what to do with it. Am I supposed to go buy a FireWire adaptor just to do this diagnostics?

Studio 1500, Windows Vista
  • iTronics Repair Level 1 Level 1
    Well, if you want to run that test, then yes, you'll have to get a firewire cable.. but I wouldn't in your case.

    I would first try restoring the iPod with iTunes. If that doesn't work, you might have a faulty hard drive or hard drive connector.
  • Brian O'Brien Level 1 Level 1
    I'm in the same boat.
    I am running the diagnosts and get as far as the Accessorize Test.
    USB_DETECT works fine.. plug in a usb cable unplug it.. fine...
    but I've never heard of a fire wire cable for an iPod.
    The test I'm interested in is passed/after the accessorize test, but I can't get there unless I have this non existent cable?
  • turingtest2 Level 9 Level 9
    You can select which tests to run manually, however this is probably the one that really matters...

    *Check your iPod with Diagnostics Mode*
    It's possible that your iPod's hard drive has started to fail. Take your iPod and place your right thumb on the centre SELECT button and your left on the top MENU button. Press down both thumbs for about 6 seconds until your iPod reboots. Immediately move your left thumb around to the rewind button |<< on the left and hold this down together with SELECT for a further 6 seconds. Your iPod should now switch into Diagnostic Boot mode. Press MENU for *Manual Test*, then select *IO > HardDrive > HDSMARTData* to reveal your stats. For comparison here are mine for my 2 year old 6th Generation Classic:
    Retracts: 889
    Reallocs: 12
    Pending Sectors: 0
    PowerOn Hours: 2202
    Start/Stops: 894
    Temp: Current 24c
    Temp: Min 10c
    Temp: Max 50c

    Take a note of your results. When finished press *SELECT & MENU* for 6 seconds to reset the iPod again.

    With modern disc drives sectors are no longer marked bad by a disc scan, if the SMART firmware detects a sector it has trouble accessing it will attempt to invisibly reallocate it to a spare area of the disc.

    Note that I've only 12 remapped sectors and none pending. To help explain what the numbers mean here is an extract from the Wikipedia S.M.A.R.T. article:
    *Reallocated Sectors Count*
    Count of reallocated sectors. When the hard drive finds a read/write/verification error, it marks this sector as "reallocated" and transfers data to a special reserved area (spare area). This process is also known as remapping, and "reallocated" sectors are called remaps. This is why, on modern hard disks, "bad blocks" cannot be found while testing the surface – all bad blocks are hidden in reallocated sectors. However, as the number of reallocated sectors increases, the read/write speed tends to decrease. The raw value normally represents a count of the number of bad sectors that have been found and remapped. Thus, the higher the attribute value, the more sectors the drive has had to reallocate.

    *Pending sector count*
    Number of "unstable" sectors (waiting to be remapped, because of read errors). If an unstable sector is subsequently written or read successfully, this value is decreased and the sector is not remapped. Read errors on a sector will not remap the sector (since it might be readable later); instead, the drive firmware remembers that the sector needs to be remapped, and remaps it the next time it's written.

    Large numbers of Reallocs or Pending Sectors would suggest your drive is failing and that you may need to repair or replace your iPod. Check your stats after another attempt to update your iPod. If the numbers increase that again points to hard drive failure. While it won't be good news at least you'll know it isn't some random software problem and you can decide what to do next.

  • gyandev Level 1 Level 1

    Thank you, KaeSun, for the initial question, as I found myself in the same position: No FW.


    And thank you, turingtest2, for your explanation. I see that with 205 Reallocs and 42 Pending Sectors, I have more than a wee bit of hard drive trouble.


    Now I have to decide whether to replace the hard drive (costly to hire it done, and DIY seems damage-prone), or replace the entire iPod with a Nano. (I don't think I want to get into the iPod hard drive world again.)

  • Brandon Fairbanks Level 1 Level 1

    i have a almost new ipod classic it is maybe 4 months old it was a replacemnt for my old classic the HD failed in that one. this one was working fine about a week ago now when i plug it into itunes it comes up as "untitled" and  itunes can't restore it because " the ipod could not be found" or something like that. so i tried the test and it asked me for fw after that i tried what you suggested and mine says:


    Retracts: 0

    Reallocs: 0

    Pending Sectors: 0

    powerOn Hours: 27

    Start/Stops: 925

    Temp: Current 23c

    Temp: Min 7c

    Temp: Max 50c


    I'm not sure if having 0s on those first three are good but please help!

  • turingtest2 Level 9 Level 9

    The stats say the iPod's hard drive is fine. Unless you a have FireWire connection cable you can't complete the FW test. Chances are there is an issue with the connection rather than the device. Things to try are an alternate cable, alternate USB port, updating USB drivers, reinstalling iTunes, checking for fluff in connectors.



  • Brandon Fairbanks Level 1 Level 1

    oh ok cool i'll try that, thank you very much!

  • Brandon Fairbanks Level 1 Level 1

    i tried the cord that came with my old ipod mini and it worked! thank you for your help!

  • turingtest2 Level 9 Level 9

    You're welcome.



  • Gene Medway Level 1 Level 1

    I've had the same issue to a point.  I tired your (turingtest2) suggestions, and got as far as "

    Press MENU for *Manual Test*, then select *IO > HardDrive > HDSMARTData* to reveal your stats."  At this point my results diverge from what you recieved.  I get two messages.  One up higher onthe screen that reads "[Can't Open Device] and then the second at the very bottom that reads and flashes "ERROR! Diag Halt."


    Of course I don't fully know what any of this means, but I fear that my iPod Classic, 160KB, and less than a year old, is in serious trouble. 


    Any advice?

  • turingtest2 Level 9 Level 9

    The hard drive is dead.


    You can investigate the options for having the drive replaced or start saving for a new device.


    If it is less than a year old, and you've not been confirming the laws of gravity with it, then you should be able to get it replaced under warranty.



  • Gene Medway Level 1 Level 1

    Well it was a Father's Day gift last year (June 2011), so I will aim for a replacement under the warranty.


    Thanks for your help.



  • turingtest2 Level 9 Level 9

    Good luck...



  • James Rothschild Level 1 Level 1

    Retracts: 20

    Reallocs: 344

    Pending Sectors: 24

    powerOn Hours: 169

    Start/Stops: 42890

    Temp: Current 31c

    Temp: Min 2c

    Temp: Max 51c


    This is a BAD thing? Yes? :-(

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