iPod as a storage drive:
You can use your iPod as a drive (hard drive or flash drive
depending on your iPod) to store and transfer data files on (also known
as disk mode).
Tip: To transfer music
files to iPod, use iTunes. You can't see the songs iTunes copies to
your iPod in the Finder or My Computer/Computer. If you copy music
files to iPod using the Finder or an Explorer window, iPod won't be
able to play them.
Using iPod as a drive
- Connect iPod to your computer.
- Open iTunes if it doesn't automatically open.
- Select the iPod icon in the Source pane.
- Click the Summary tab.
- For most iPod models (except iPod shuffle):
Select "Enable disk use" or "Manually manage songs and playlists".
Either one will allow you to use iPod as a drive. If you select
"Manually manage songs and playlists", iTunes won't automatically
update iPod with the iTunes library. If you want iTunes to
automatically update your iPod, select "Enable disk use" instead.

For iPod shuffle:
Click the "Enable disk use" checkbox
and set the Storage Allocation slider to indicate the amount you want
to be used by audio files and the amount you want to be used for data
files.

- The iPod disk icon appears on the desktop and in
Finder windows, and in My Computer/Computer in Windows. Double-click
the icon and drag files to or from iPod's window to copy them.
- Make sure to eject iPod before disconnecting it from your computer. Tip:
The iPod display will say "Do Not Disconnect" when disk use is enabled
(iPod shuffle's status light will continue to blink orange until after
it is ejected). These are reminders for you to eject iPod first.
Copying songs from your iPod to your computer
The
iTunes library on your computer holds all the media (music, videos,
podcasts, etc.) you've encoded from your CD collection or purchased
from the iTunes Store. With default settings, iTunes automatically
copies the media in your library to your iPod. When you use your iPod
as a hard disk, you can't see the media iTunes copies to your iPod in
the Finder or My Computer. This is normal. Using the Finder or My
Computer, you can't copy these media files from your iPod back to
iTunes or to any other computer. The synchronization between your iPod
and your computer is one way: from iTunes to iPod. The exception is the
transfer Purchases feature, which allows you to restore purchased iTunes content to your computer from your iPod.
If
you've erased the iTunes library on your computer, there's no way to
use the Finder or My Computer/Computer to copy the media from your iPod
to reconstitute the library on your computer. One solution is to encode
the songs from your CD collection again, then sync your new library
with iPod. If you purchased content from the iTunes Store and didn't
back them up, there's no way to download them again. You'll have to buy
new copies of the content. This is why backing up your media files in iTunes is important.
So
what if you have some songs on one computer and you want
to—legally—copy them to another. Can you use iPod's hard disk for that?
Sure. See "How to use your iPod to move your music to a new computer" for steps to use your iPod to move music to another computer.
Troubleshooting
If
you plan to connect iPod to another computer, make sure not to sync it
with the iTunes library on the other computer. This will only happen if
you selected the Enable Disk Use option instead of Manually Manage
Music and Videos.
Note: If you take your iPod shuffle (or an iPod you
selected Enable Disk Use for) to another computer, you will need to
eject the iPod from My Computer/Computer or a Finder window since it
will not appear in iTunes.
Right-click (or Control-click on Mac) on the iPod and choose Eject from the shortcut menu.
If
you use your iPod as a disk with a Windows PC, keep in mind that the
FAT32 file system can only accommodate files that are smaller than 4
gigabytes. No matter how much free space there is on your iPod, you
can't copy files that are larger than that.