Dress in long sleeves long pants and work boots to protect skin.
Remove mirror from bathroom wall.
Start by pulling at the mirror to test the strength of the adhesive and where it may be located.
Quick tutorial on how to remove mirror from bathroom wall drywall or where ever.
Use a blow dryer to soften the glue.
Maintain a steady pressure and listen for the drywall paper tearing loose from the wall.
Spread a heavy.
Lay down cardboard or plastic on any surface surrounding the mirror.
With another shim beneath your pry bar to protect the wall gently begin working the bar behind the glass.
The duct tape will limit the amount of glass that drops if the mirror shatters.
Prepare your work area for easier cleanup later.
You can also use a small heat lamp.
Protect the sink area.
Dress appropriately to prevent any injuries.
Cover the mirror with duct tape.
You may want to use a heat gun and heat the mirror to try to soften and melt the glue between the wall and glass.