My dilemma is this: I have existing sliding mirrored closet doors which are in good condition and would be very expensive to replace. These are suspended from an upper track, and have a lower track fastened to the floor to prevent them from swinging. I wish to install hardwood to replace broadloom. This would raise the floor height by close to 3/4". I think the vertical adjustment on the closet doors is no more than 1/4". The only solution I can think of is to remove the doors and tracks, cut away the drywall above the upper track, and refasten the track directly to the ceiling joists. This would give me at least a 1/2" height adjustment. There is a valence which would hide the recessed upper track. Does anyone have a better idea?

How far off the floor do the actual doors slide, without the track? I'm thinking attaching some tabs/create custom track (without the original track) to the floor that keep everything in sinc...hard to describe. Another video idea..I have hundreds.

The doors themselves are about a 1/2" above the existing floor, but have tabs that mesh with the lower track.

Most of those I run into are only held in place by the track above. You can lift them up and out. And there is an adjustment on the bottom with a screw.