Epson 3865X Plus User Manual page 237

4. Grasp the disk drive from the front of the drive bay and pull
it completely out. Set it aside.
If you have just removed one hard disk drive and are leaving
another one in your system, make sure you have set the
jumpers on the remaining drive to indicate that you now
have only one hard disk drive. (If not, see "Setting the Hard
Disk Drive Jumpers," on page B-4, for instructions.)
If you do not need to replace a hard disk drive in the
vertical mounting position, see "Replacing the
Subassembly," on page B-47.
If you need to replace a hard disk drive that you removed
from the vertical mounting position, follow the steps under
"Installing the Drive" beginning on page B-13. However, it
is easier to replace the drive while the subassembly is out of
the computer. Follow the steps in that section as if the
subassembly was installed. Then see "Replacing the
Subassembly," on page B-47.
B-46 Installing and Removing Disk Drives