Eject and disconnect the iPod or iPhone

When iTunes has finished loading songs onto the iPod or iPhone, you can disconnect it unless it’s an iPod you’re using in disk mode (or you need to continue recharging its battery). ITunes displays the message saying that the update is complete and “OK to disconnect.” The iPod displays the message “OK to disconnect.” When you see this message, you can unplug the iPod from the cable or from your computer.

If you’re using an iPod in disk mode, however, iTunes doesn’t prepare the iPod for disconnection after it finishes loading songs. Instead, it leaves the iPod mounted on your computer as a disk so that you can transfer files to and from it manually. When the iPod is in disk mode like this, it displays the message “Eject Before Disconnecting.” In Mac OS X, an icon for the iPod appears on the desktop unless you have specifically chosen to exclude it (see the “Prevent the iPod from Appearing on the Desktop in Mac OS X” sidebar). See Chapter 12 for more information about disk mode.

A Brief Overview of iPod Touch

Enter the fifth-generation iPod touch, the 2012 model that has slimmed down to a mere 6.1mm in thickness. It's also about 10 percent lighter -- despite being grafted with a new 4-inch Retina display. Not only is it bigger and thinner, but it's far faster and has hugely improved cameras on both the front and rear.

Hardware
The fifth generation improves on that in every regard. As mentioned above, it now measures 6.1mm thick, while its width and height clock in at 4.86 by 2.31 inches (123.4 x 58.6mm). Compared to the fourth-generation touch, which measured 111 x 58.9 x 7.2mm, the new iPod is considerably thinner, fractionally narrower and massively taller. It's also noticeably lighter, at 3.1 ounces (88 grams) compared to 3.56 ounces (101 grams) for the outgoing model. The crimson hue sets up a nice contrast to the white bezel around the glass on the front, as well as the white plastic that forms the rim of the 3.5mm headphone jack, which still lives on the bottom.