Lenovo ThinkCentre Edge 72 Hardware Maintenance Manual page 128

This section provides instructions on how to replace the hard disk drive.
To replace the hard disk drive, do the following:
1. Turn off the computer and disconnect all power cords from electrical outlets.
2. Remove the computer cover. See "Removing the computer cover" on page 116.
3. Remove the front bezel. See "Removing and reinstalling the front bezel" on page 117.
4. Note the location of the four screws
assembly upward.
Figure 61. Pivoting the drive bay assembly
5. Hold the hard disk drive and remove the four screws that secure the hard disk drive. Then, remove
the hard disk drive from the drive bay assembly.
Figure 62. Removing the hard disk drive
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that secure the hard disk drive. Then, pivot the drive bay