Added File Systems

The following file systems are included in the SunOS release 5.7 directory structure:

• The optional /opt file system, which can be used to store third-party or unbundled software. If /opt is not a separate file system, it may be a symbolic link to /usr/opt.

• The /vol file system, which provides the default file system for the Volume Management daemon, vold(1M). See the volfs(7) man page.