IPod causes long boot to iMac

I have a 5.5 generation iPod 80gig and if it is connected to my iMac (24inch) the iMac will not reboot ... as soon as I unplug the iPod the iMac boots... any one have any advice... thanks... Van

To enable/disable disk mode, plug your iPod into your iMac and open iTunes. When your iPod is recognized by iTunes, click on it's icon in the sidebar of iTunes and click the "Summary" tab at the top of the page. Scroll down to the bottom of the page and you will see 4 checkboxes. One of them will say "Enable Disk Mode". Check that box and click the "Apply" button in the bottom right of the window.
Enabling disk mode allows you to put files on your iPod as if it was an external hard disk. You can also put files on your iPod through iTunes when disk mode is enabled.
Trevor

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Thanks Pete, but it doesn't solve my problem.
Apple does something to the recovery partition to make it invisible. When I was trying to setup my 16GB USB stick drive as a "Recoverable Partition", since I don't have one on my main Lion drive, it made it invisible also. But during the process it failed to finish but has left my USB drive invisible under Lion and nothing that I've tried has been able to undue that. (See Above). What is it that I need to do to get my USB Flash drive visible again under Lion. It is visible under Snow Leopard and it is visible under the lion install utitlties (I made a installer DVD from original internet downloaded Lion installer) but not under disk utilities on lion or the lion desktop! I've reformated under both the above(Snow Leopard & Installer utilities) were I had access to the USB Drive but that didn't undue whatever Apple does to make the recovery partition and my USB Drive invisible because once I boot back into Lion, it's still not there! So the $64,000 question is how do I get my USB Flash drive visible again under Lion?
Hope this help you to understand my situration.
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Hello,
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Please also see this thread for more discussion of this problem:
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http://discussions.apple.com/thread.jspa?threadID=1400016

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Hello stiannac
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http://support.apple.com/kb/ts1410
Thanks for using Apple Support Communities.
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Click Here
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Try
iOS: Device not recognized in iTunes for Windows
I would start with
Removing and reinstalling iTunes and other software components for Windows Vista, Windows 7, or Windows 8
New cable and different USB port?
Runs this and see if the results help with determine the cause

HT4972 My IPad 2, IPhone 3GS ans iPod no longer work with apple TV, I have 2 apple TV in my house and for he last 3 weeks the iPod was the only one we could use for appleTV now none of them works, the apple TV icon does not show up any more. Re-startedev

My IPad 2, IPhone 3GS ans iPod no longer work with apple TV, I have 2 apple TV in my house and for he last 3 weeks the iPod was the only one we could use for appleTV now none of them works, the apple TV icon does not show up any more. Re-started everything.

Ok thank you so much, for your timely response.
RESPONSES:
1)   When I set up my iMac, I did not transfer any data directly from my windows PC. I simply used the same iTunes login and account. I have access to all of the files via the "Purchased" section of the iTunes store. If I click "Download Previous Purchases" text, I can download ALL of the purchases I have ever made.
2)   I have the Apple TV 2, so good news, question answered. I thought maybe it was the Apple TV 1, but it is the Black model, so bam. Good response for you. Well the whole damned reply is an awesome response, just pointing out that one piece of awesome. I stated that it was an Apple TV 2, and yet you were still good enough to figure I could be mistaken, and provide me with knowleedge just incase.
QUESTIONS:
3)   So can my iMac not stream the data directly from itunes, without download? Apple TV can, but perhaps that is something among many things that maker it unique, and awesome.
SERIOUSLY.... THANK YOU...
I work in the computer support section for the Military. The only problem is we use Windows , lol. Well that and i've been gone for nearly 6 months on recover. I go back next month though I hope. But working in that field gives me the abilty to judge responses that run inside the same vein. Your response was so awesome that I half thought I might have written it myself.

Booting my imac from an external firewire drive suddenly stopped working. Disk still mounts but it will not boot the machine!

I took my MacBook Pro in for repairs and erased the drive for safety AFTER having copied the entire contents to an external firewire 800 drive using SuperDuper!
The copy process made the disk bootable and I was able to boot up my iMac and run it just as if I were working on my MacBook Pro. After a couple of times working this way, the iMac stopped booting from my drive.
The drive shows up when starting up by pressing the option key but then, after a long time, the iMac shows a circle/slash symbol as if it can't find the system files.
If I restart without pressing the option key, the disk mounts on the desktop and I can use it as an external drive just fine! I tried selecting it in System Preferences as the startup disk, but the same thing happens, blank grey screen with the circle/slash.
Since this happened with a Seagat drive - a brand that has failed me in the past many times - I thought it was a disk problem. I had backed up my MacBook pro contents to another Toshiba drive, and booted from there perfectly well for a couple of times...
Until the same thing happened! Thank God I didn't trash the Seagate although it makes very faint clicking noises that will keep me far away from using it again anyway... but that's another story!
iMac runs 10.5.8, the boot disk (and my MacBook) runs on 10.6.8 if that makes any difference... And now I'm scared that when I copy back to my MacBook Pro it might not boot up at all!!!
What gives???
- MerlinCreative

You need to reinstall Snow Leopard onto the external drive:
Reinstall OS X without erasing the drive
Do the following:
1. Repair the Hard Drive and Permissions
Boot from your Snow Leopard Installer disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer.
If DU reports errors it cannot fix, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.
2. Reinstall Snow Leopard
If the drive is OK then quit DU and return to the installer. Proceed with reinstalling OS X. Note that the Snow Leopard installer will not erase your drive or disturb your files. After installing a fresh copy of OS X the installer will move your Home folder, third-party applications, support items, and network preferences into the newly installed system.
Download and install the Combo Updater for the version you prefer from support.apple.com/downloads/.

IPod causes long boot to iMac

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