Lenovo ThinkStation 4215 Hardware Maintenance Manual page 113

To replace the primary hard disk drive, do the following:
1. Remove all media from the drives and turn off all attached devices and the
computer. Then, disconnect all power cords from electrical outlets and
disconnect all cables that are connected to the computer.
2. Remove the computer cover. See "Removing the computer cover" on page 87.
3. Locate the primary hard disk drive. See "Locating internal drives" on page 86.
4. Disconnect the signal cable and the power cable from the hard disk drive.
5. Press the blue release tab 1 down, slide the hard disk drive cage 2 to the
rear of the computer, and then pivot it outward.
Figure 26. Removing the primary hard disk drive
6. Remove the hard disk drive cage from the chassis by sliding it outward.
7. Pull on the blue handle 3 to release and remove the hard disk drive from
the drive cage.
8. Flex the sides of the blue bracket to remove the hard disk drive from the
bracket.
Chapter 9. Replacing FRUs
107