"John61" wrote in message
...
We have been in the house for 10 years, with carpet on main floor.
Surprisingly just found under the old carpet is hardwood floor! Removed
all the carpet, the hardwood is basically in good condition, don't think
it needs a refinish. But there are dozens of small nail holes scattered on
the floor (don't know why the previous owner made them). Also there will
be holes along the walls after I remove nail track strip.

How to repair the holes? just want to make them more invisible.

If they're small holes, the dust from sanding will fill them, but this
requires sanding & refinishing the entire floor. You may end up doing that
anyhow. If you use a filler and cover it with urethane or whatever, the
finish may not match the surrounding surface, and if either one is glossy,
you WILL notice it.