> http://www.pathname.com/fhs/ I went to the above URL what exactly are they talking about when they say: if the corresponding subsystem is installed See the copy pasted below Requirements The following directories, or symbolic links to directories, are required in /. Directory Description bin Essential command binaries boot Static files of the boot loader dev Device files etc Host-specific system configuration lib Essential shared libraries and kernel modules media Mount point for removeable media mnt Mount point for mounting a filesystem temporarily opt Add-on application software packages sbin Essential system binaries srv Data for services provided by this system tmp Temporary files usr Secondary hierarchy var Variable data Each directory listed above is specified in detail in separate subsections below. /usr and /var each have a complete section in this document due to the complexity of those directories. Specific Options The following directories, or symbolic links to directories, must be in /, if the corresponding subsystem is installed: Directory Description home User home directories (optional) lib<qual> Alternate format essential shared libraries (optional) root Home directory for the root user (optional) -- If the word following begins with a vowel, the word you want is... to read the rest of this, go here http://www.wsu.edu/~brians/errors/a.html