PHJF wrote on Oct 5, 2013, 18:32: I just migrated my library to new OS/SSD and simply copied over /steamapps/
That works if you reinstall Steam over the top. It doesn't seem to work (anymore) if you're trying to just add games back into an existing Steam installation.
Some games will reinstall if I just launch them, but so far it's about 50-50. Sigh.
Did you back up the acf files with them? I noticed when I was trying to cheat on downloading the various versions of civilization 4 (since the mods have complete copies of everything that came before) that steam ignores what is actually there if the acf file for the game in the Steam/steamapps directory says its not there.
I think ACF is also quite recent so some games you have backed up may still use the old system?