I did an erase and install and when it started back up (and I've restarted once or twice), the main hard drive (e.g., the default would be if I opened the drive "Macintosh HD," though I've re-named it) has, in addition to my Applications, Library, System, and Users folders, the bin, cores, link to etc, mach_kernal, private, sbin, link to tmp, usr, link to var, and Volumes.
Any ideas on why those aren't hidden?
Any ideas on why those aren't hidden?