IBM 1412 - Manual (Page 47)

Reverse the steps described above when installing a new
hard disk drive.
CAUTION:
Do not apply any shock to the hard disk drive. The
hard disk drive is sensitive to physical shock. Incor-
rect handling can cause damage and permanent loss
of data on the hard disk. Before removing the hard
disk dirve, the user must have a backup copy of all the
information on the hard disk drive. Never remove the
hard disk drive while the system is operating or is in
hibernation mode.
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