DEC DECstation 5000 Model 100 Series Hardware Operator's Manual page 96

If the drive is not listed at all,
The cables to the drive might not be plugged in all the way.
You might have set a SCSI ID number that was already set
on another drive inside the system unit.
Open the system unit and check for these two possibilities.
Then use the cnfg command to test the drive again. If your new
drive is still not listed properly, tell your system manager or
call your Digital Customer Support Center.
To Remove a Hard Disk Drive from the Base of the System Unit
Removing a hard disk drive from the system unit follows the
same procedure as installing one. Use the previous detailed
instructions for installing the drive to perform these steps:
Shut down the software.
1.
Remove the cover from the system unit, as shown in
2.
Figure 5-1, on page 5-3.
Attach the antistatic wrist strap, as shown in Figure 5-2,
3.
on page 5-4.
Unhook the power supply cable from the white loop on the
4.
front drive panel.
Loosen the two screws that hold the front drive panel in
5.
place.
Loosen the two screws at the end of the drive bracket.
6.
Remove the front drive panel and the drive bracket
7.
attached to it.
Unlock the sliding latch on the hard disk drive that you are
8.
removing.
Lift the drive off the mounting post and out of the chassis
9.
cutouts.
Unplug the power supply cable and SCSI cable from the
10.
drive. Pull on the SCSI connector flap to remove the
connector.
Set the drive aside carefully. Store it in an antistatic bag if
11.
you have one.
Press all the cables back into the system unit carefully.
12.
Internal Hardware Options 5–41