IBM ThinkPad i Series 1800 Troubleshooting Manual page 38

Upgrading the hard disk drive
5. Open the computer display; then stand the computer on its side and
6. Detach the cover from the hard disk drive.
7. Attach the cover to a new hard disk drive.
8. Insert the hard disk drive and its cover into the hard disk drive bay; then
9. Reinstall the screw.
10. Reinstall the battery.
11. Turn the computer over again. Connect the ac adapter and the cables to
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ThinkPad A21e Service and Troubleshooting Guide
remove the hard disk drive by pulling the cover away from the
computer.
firmly install them.
Note: Make sure that the label on the hard disk drive faces to the bottom
of the computer.
the computer.