IBM RT PC Options Installation page 87

7. Facing the front of the unit, release the plastic latches holding the drive
in place and carefully remove the drive from position E.
Third Fixed-Disk
Drive In
Position E
8. If drive is to be reinstalled in drive position C, see "Installing a
Fixed-Disk Drive in Position C" for installation of the drive and
replacement of the cooling fan.
2-46 Options Installation