Lenovo ThinkCentre Edge 3396 User Manual page 67

1. Back up all files and data from the hard disk drive. There are a variety of backup programs available
commercially. Your operating system also might have a backup program that you can use. Lenovo
provides the Rescue and Recovery program to help you back up and restore data. See "Performing
backup and recovery operations" on page 38 for more information.
2. Remove all media (diskettes, compact discs, tapes, and so on) from the drives.
3. Turn off the computer and all attached devices. Your hard disk drive automatically parks the read/write
head in a nondata area. This prevents damage to the hard disk drive.
4. Unplug the power cords from electrical outlets.
5. Disconnect communication cables, such as modem or network cables, from the outlets first, and then
disconnect the other ends from the computer.
6. Note where any remaining cables are attached to the computer; then, remove them.
7. If you saved the original shipping cartons and packing materials, use them to pack the units. If you are
using different cartons, cushion the units to avoid damage.
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Chapter 9 Preventing problems
55