Diagnostic Mode, My iPod Classic doesn't have a FW Jack

Hi,


I'm experiancing a problem with my iPod Classic 6th Generation. I beleive (due to some research) that it may have some bad sectors because it repetitavely crashes iTunes during sync on random songs. I tried doing it in small chunks but it didn't seem to make a difference.


I tried Diagnostic Mode and I have gotten to the point where it's at the Accessorize Test. It says on the screen;


LCD=2


FW_DETECT=0

USB_DETECT=1

Please plug FW


I beleive FW means Fire Wire but I have no signs of a Fire Wire jack. I've tried everything and I'm stuck on this part.


Any help appreciated, I just don't want to know if you're having the same experiances as me 🙂


Thanks,

Zach

iPod classic, Mac OS X (10.5)

Posted on Jun 10, 2011 8:56 AM

Reply
Question marked as Top-ranking reply

Posted on Jun 10, 2011 6:31 PM

Your computer might not have a FireWire port and even if it does, it's no use unless you have a FireWire iPod cable. Skip the test or reset your iPod and do manual tests, which in any case will be more informative.


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 is a sample of mine from 6th Generation Classic after I'd had it for about 2 years.

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.


tt2

104 replies

Aug 3, 2012 4:19 AM in response to turingtest2

My 5-6 yr old ipod 5G2A 80Gb Classic just started blinking the apple logo with clicking sounds.


tried formatting -wotks when empty returns to the above state.


the smart data results are:


retracts: 2357

Reallocs:0

Pending sectors:0

Power on hours:521

Start/stops:10134


tried disk check in windows(win 7 x64) and it shows no errors, also can sucessfully use disk mode


any help would be appreciated

Sep 2, 2012 9:41 PM in response to turingtest2

Im having the same problem with my 160gb ipod classic, it crashes at random song while sync and it gives mi several diferent unknown errors. I´ve tried to fix it using the procedures here and nothing.


Hdsmartdata


Retracts: 246

Reallocs: 343

Pending: 3

PowerOn: 988

Start/Stops: 385


Any advice?

Oct 13, 2012 11:29 AM in response to turingtest2

So, I ran the test and got the following results.


Retracts: 315

Reallocs: 0

Pending Sectors: 10

PowerOn Hours: 1104

Start/stops: 15937


These don't seem bad to me, but I'm still experiencing problems of freezing and not reading content. I would attempt to restore it, however it cannot connnect to my Mac even when it's in Disk Mode and following the steps you've outlined in the previous post. Any way to check to see if it has a problem with the connection? When I plug it in, it says "Do not disconnect" but the computor doesn't recognize it, disk mode or not. What should I do?

Oct 14, 2012 2:24 PM in response to turingtest2

When I try to play certain songs (mostly from certain albums), my ipod freezes for a while and then skips to the next song. These songs have been on my ipod for a long time and they've worked before, and they work when I play them on itunes. When I sync my ipod to my itunes and click on one of the "bad" songs from my ipod (not from my itunes library), my computer freezes. Furthermore, whenever I connect my ipod to my computer, it recommends that I try doing a "automatically fix file system errors" or "scan for and attempt recovery of bad sectors". I haven't done either of those two yet.


Basically, all that I have tried is just resetting my ipod. I would rather not do something that requires my computer being on for many hours because my computer is prone to freezing and shutting off at random times, and I don't want that to happen while it is formatting my ipod or whatever.

Oct 22, 2012 10:46 AM in response to ZUsher

My 2 year old 160GB ipod classic ?6th generation? has suddenlty decided not to sync with itunes as it should. About 2 months ago it froze whilst syncing, i managed to reset it and resync it but not all datd transferred. Last week i tried resyncing it and have had increasingly less data going over each time. Each time the ipod was connected itunes was running really slow or would crash, this didnt happen when my iphone, ipod nano, or ipad were connected.


I have reformatted the classic as both ?NTSC? and FAT. I have deleted and redownloaded itunes. I have restored the ipod countless times. Having just run the SMART test these are my stats....


Retracts 148

Reallocations 313

Pending sectors 16

Power on hours 2643

Start/stops 113

Temp 22

Temp min 13

Temp max 53


I have just reformatted to FAT again and rerun the test, there are no differences in the stats. I am currently manually transferring the music in blocks of 50, so far it seems to be accepting it......althoug i could be here a while theres over 9000 songs to go on :-/


From those stats are we looking at a failing HDD? IF so is it worth me buying a replacement HDD? are they easy enought to fit? I no longer have warranty so no worries there! Thanks

Jan 3, 2013 4:59 PM in response to turingtest2

I was given and Ipod Classis and it wont seem to restore all the way.. and the my itunes will freeze when connected but work as soon as i dissconnect the ipod. I did the Diagnostics Mode and came up with this. I would assume since the max temp is so high its totally fried.


Retracts: 13

Recallocs: 1656

Pending Sections: 8

Poweron Hours: 135

Start/Stop: 23012

Temp: Current 35c

Temp: Min 59c

Temp: Max 245c

Mar 18, 2013 10:33 AM in response to CountBlacula

Recently the battery of my iPod 4G died. I did manage to get into Diagnostic Mode and tested the power: What exactly does the value after BATT mean?


A2D TEST

ID 74

VCC 227

BATT 622

TEMP 329

ACC 255


I also did a harddrive check. Every time I did this, the iPod reboots and the value after RETRACTS increases by 3. So. What exactly does RETRACT mean? I searched Wikipedia, but I'm not sure I understand their description...


SMRTDATA

RETRACTS 36

REALLOCS 0

PENDING 0


Maybe somebody can explain to me whether an increasing value of RETRACTS is a bad sign.

Mar 18, 2013 12:45 PM in response to fabelfroh

It may well be that the data regarding temperature has been corrupted. It's too high for a sensible value in either Fahrenheit or Celsius, and too low for Kelvin. Even if it is stored using an arbitrary scale or offset it ought to be displayed in a logical manner.


A reset is required to get into and out of diagnostics mode, and perhaps the act of entering the HDD diagnostics causes yet another retract which might explain the count of 3. What happens when you try to load data onto it?


tt2

Mar 22, 2013 8:57 AM in response to fabelfroh

It was really hard to open the iPod. I managed somehow. The iPod works again. The hard drive was not damaged. Hurray. However, the battery was swollen and seemed to have damaged the click wheel slightly. The "Back" button now works barely and the "click" is gone, whereas the other buttons work fine. Needless to say that the Diganostic Mode test works. Is it possible to replace the click wheel with this model? Couldn't find useful information on that topic.

Jul 20, 2013 8:18 PM in response to ZUsher

Hello.


My 7th gen iPod touch is having a boot loader issue. I ran the manual test, and these are my results:


Retracts: 58

Reallocs 0

Pending Sectors 0

PowerOn hrs 526

Start/stops 14083

Current Temp 33C

Min 55C

Max 245C


It only does the boot loop when connected to a USB port (either to my computer or a wall socket). If I plug it into my alarm clock that has an iPod dock, it works fine (other than telling me it needs to be restored through iTunes).


I orignally bought this iPod about 3 years ago.


Edit to add: If I get it into disk mode and then plug it into my computer, it goes back to a boot loop. During the boot loop, while connected to my computer, it will not let me enter either diagnostics mode or boot mode.

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Diagnostic Mode, My iPod Classic doesn't have a FW Jack

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