I live in a rented house and want to partition off the dining room to make a new bedroom.

The landlord says I can asd long as I don't damage the existing wood floor.

I need to know if it is possible to attach a stud wall to a wooden floor without damaging the floor? So that if we leave and the stud wall is removed, then the wooden floor will be restored into use again, with no holes or repair marks on it.

Any information would be very helpful.

Whether the landlord allows it or not... your local zoning and planning office might say differently. There are laws pertaining to egress etc... and they all apply to how a house is partitioned.

Not knowing exactly where you are at... as in Country, State County and city... it might constitute a violation of local ordinances that can result in the structures certificate of habitation being revoked.

Build the partition out of 2 x 3s on the floor, in 2 horizontal sections so that you don't have to raise one entire wall and hit the ceiling with the angle. Put one on top of the other.
Attach to the side walls with a total of only 4 screws (not nails) and shim if needed. Put drywall or paneling up. It will hold as long as you don't hang shelves or TVs on it and the landlord should be happy.

Get a 2x4 for the bottom plate. Staple carpet to one side, trim flush with the edges. Lay this 2x4 on the floor with the carpeted side down. Stand on the 2x4 and measure to the ceiling. Measure in several places. Build your wall 1/4" shorter than the shortest measurement. Stand your wall up. If ceiling joist run perpendicular to the wall you can put it where you want. If the ceiling joist run parallel to your wall you must put your wall under a ceiling joist. After standing wall up and getting it plumb, drive wooden wedges between top plate of the wall and the ceiling. If ceiling joist run perpendicular make sure you wedges are underneath a joist. Otherwise wedges will simply break ceiling drywall. Need a wedge about every other ceiling joist or about 32" to 48". Screw through top plate and wedge into ceiling joist. Screw the wall to adjacent walls at the end. The downward pressure of the wedges and the attachment to the end walls should hold the Wall in place. The carpet should protect the floor. Any repairs necessary when the wall is removed should be limited to patching up small holes in drywall of adjacent walls and ceiling and painting.

U also will have to patch where wedges were installed due to compression of sheetrock. NO biggie.

Chuck