Gateway M-1412 Reference Manual page 121

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11
Using the plastic tab, slide the old hard drive, then
remove it.
12
If your new hard drive already includes the hard drive
bracket, go to step 17.
-OR-
If you need to move the hard drive bracket from your old
hard drive to your new hard drive, go to step 13.
13
Remove the four screws that secure the hard drive to the
hard drive bracket.
Screw
Screw
Screw
Screw
113