/ This is the root file directory housing the following directories.
/bin Bin houses the executable files for the system others are /usr/bin, /sbin, and /usr/ubc.
/dev This is the device directory, it is used for the physical disks, tape drives, and terms.
/etc This directory is mainly for configuration files, most importantly the system boot scripts.
/lost+found Houses files that were lost due to an unexpected system failure, these files are found when fsck is performed.
/lib Holds libraries for programming languages like C and fortran
/mnt This is an empty directory reserved for mounting remove file systems like a CD Rom or other partition. /tmp Used as a scratch directory and swap space for memory, remember to clear this directory every once and awhile.
/home Used to house user's home directories.
/usr Used for local programs and packages.
/usr/adm Administrative tools like Top, and any locally created tools.
/usr/include Houses C header files, I/O, and math libraries.
/usr/lib More programming libraries along with the libraries for X.
/usr/local Locally created/used executables for public access.
/usr/man The man files for the system are in this directory in order of importance.
/var Houses printer termcaps, printing, and mail files.
/var/spool Used for spooling printing, mail, and cron jobs.
/var/spool/mail Mail directory for user's mail file used for incoming mail.
c:\ top level directory that houses the paging file.
c:\program files For putting common programs for users.
c:\winnt (or wherever you install nt) This directory houses all the important stuff:
c:\winnt\inf Holds all the inf files that configure some programs.
c:\winnt\profiles This is where your users environment settings are held.
c:\winnt\repair Houses your original system configuration.
c:\winnt\system This directory contains most system files (*.sys) for controlling the system and some fonts.
c:\winnt\system32 Contains 32-bit "old DOS" commands and some other non essential commands