Compaq 486 Maintenance And Service Manual page 74

3. Using a Torx T-15 screwdriver, remove the screws securing the fixed disk
drive cage; then swing the drive cage out (Figure 5-18).
4. Lift the fixed disk drive out of the cage and remove the shock mounts
(Figure 5-19).
To replace the fixed disk drive, reverse the steps in the above
illustrations.