Drywall in attic bath

I'm planning to drywall a new attic bathroom. There are a few problems, the first of which is the full 4x8 sheet will not fit thru the doorways/stairways etc. What would be the best way to precut the drywall so it will 1.] fit thru the stairway and 2.] be in some decent condition to minimize taping joints?
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What I have done is fold it in half and moved it into the confined space. I score the drywall on the back and then break it in half - not all the way through though. Be sure not to twist the sheet as you are carrying it in as you might tear the finished paper surface. I then add some additional support to the wall where the crack will hit, basically ensuring the fire blocking falls on the crack. Once in the room, open the sheet back up. Screw the drywall in place, add a couple screws in the vicinity of the crack into the fire blocking and you will not notice the cut seam
sfsullivan wrote:

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