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>The Filesystems window</TITLE
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><H1
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><A
NAME="FILESYSTEMS"
>The Filesystems window</A
></H1
><P
>      The Filesystems window displays information about the machine's
      filesystems. The default display begins by showing a display of
      free space on filesystems on the machine. On the left is a
      graphical representation of the relative sizes of those filesystems,
      and on the right are details for each filesystem: its name, 
      the percentage of free space on it, and whatever parameter
      you have selected to view: the allotted size, the used size, or
      the amount free on it. You can refine exactly how gtop displays
      these with the <A
HREF="preferences.html"
><B
CLASS="GUIMENU"
>Preferences
      </B
></A
> dialogue and with the <A
HREF="filesystems.html#FS-MENU-VIEW"
>      <B
CLASS="GUIMENU"
>View Menu</B
></A
>.
    </P
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="FS-EXPL"
>A word about filesystems</A
></H2
><P
>       Filesystems under UNIX can be a little daunting. There is
       a fuller explanation in the appendix to the GNOME users'
       guide. 

       The display on the filesystems window will vary from machine
       to machine. It depends on what filesystems are actually mounted
       on your machine. For a fuller explanation of mounting, you
       may wish to look at the documentation for your system, or at
       the appendix in the GNOME Users' Guide. Most mounting is
       performed automatically when the machine boots up and depends
       on how the hard disk is partitioned.
     </P
><P
>       The simplest - and most common - method is to have just a single 
       filesystem mounted on your machine. This is generally called
       the root filesystem and denoted by a slash: <TT
CLASS="FILENAME"
>/</TT
>.
       If your hard drive is arranged as a root filesystem and swap space,
       and if you have no CDROM or floppy disk mounted at the moment, then 
       as there is only one filesystem, the display on the left will be in 
       one colour only with a single label for it on the right:
     </P
><DIV
CLASS="FIGURE"
><P
><IMG
SRC="./figs/gtop-fs-1.png"></P
><P
><B
>Figure 5. The filesystems window of gtop: one filesystem</B
></P
></DIV
><P
>       Some machines have more complicated layouts than this. They have 
       separate parts of the overall filesystem partitioned into their own 
       areas. This is good practice to stop an accident in one filesystem 
       from affecting files in another. If there are several filesystems
       mounted on your machine, then each one will be represented 
       by a different colour and the label for it on the right will be 
       colour-coded appropriately. Again, swap space will not appear on 
       this list. 
     </P
><P
>       It is also possible to mount some filesystems whilst the machine
       is running. A very common example is a <I
CLASS="MEDIALABEL"
>CD-ROM</I
> 
       or a <I
CLASS="MEDIALABEL"
>floppy disk</I
>. These have filesystems on 
       them. Another example is found on networked machines running 
       <TT
CLASS="APPLICATION"
>NFS</TT
> (network filesystem). If CD-ROMS, 
       floppies, or remote filesystems are mounted, then they too
       will show up on the gtop display:
     </P
><DIV
CLASS="FIGURE"
><P
><IMG
SRC="./figs/gtop-fs-2.png"></P
><P
><B
>Figure 6. The filesystems window of gtop: two filesystems</B
></P
></DIV
><P
>       Solaris users should be aware that Solaris deals with swap 
       slightly differently from most UNIX and UNIX-like systems. 
       It has a special filesystem called tmpfs which holds both swap 
       space and the <TT
CLASS="FILENAME"
>/tmp</TT
> directory. As more files 
       are put into <TT
CLASS="FILENAME"
>/tmp</TT
>, the available swap space 
       shrinks. The tmpfs filesystem does not show up on the filesystem 
       display. 
     </P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="FS-MENUS"
>Menu options affecting the filesystem display</A
></H2
><P
>       Several menu options can affect the display in the filesystems
       window. There is also a <A
HREF="processes.html#TOOLBAR"
>toolbar</A
>
       which is described in the Processes section of this document.
     </P
><DIV
CLASS="SECT3"
><H3
CLASS="SECT3"
><A
NAME="FS-MENU-FILE"
><B
CLASS="GUIMENU"
>File Menu</B
></A
></H3
><P
>        The <B
CLASS="GUIMENU"
>File Menu</B
> provides the same options as the 
        File Menu on the Processes Window. See 
        <A
HREF="processes.html#P-MENU-FILE"
>there</A
> for the description.
      </P
></DIV
><DIV
CLASS="SECT3"
><H3
CLASS="SECT3"
><A
NAME="FS-MENU-VIEW"
><B
CLASS="GUIMENU"
>View Menu</B
></A
></H3
><P
>        The <B
CLASS="GUIMENU"
>View Menu</B
> provides a choice of three options:
      </P
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
><B
CLASS="GUIMENUITEM"
>Total Filesystem Size</B
></DT
><DD
><P
>           The <B
CLASS="GUIMENUITEM"
>Total Filesystem Size</B
> display 
           shows filesystem sizes relative to how much space has been 
           allotted (typically by partitioning) for each filesystem.
         </P
></DD
><DT
><B
CLASS="GUIMENUITEM"
>Used Filesystem Size</B
></DT
><DD
><P
>           The <B
CLASS="GUIMENUITEM"
>Used Filesystem Size</B
> display 
           shows filesystem sizes relative to which filesystems are the 
           most full: a small but very full filesystem will take up more 
           space in the graph than a large but empty one.
         </P
></DD
><DT
><B
CLASS="GUIMENUITEM"
>Free Filesystem Size</B
></DT
><DD
><P
>           The <B
CLASS="GUIMENUITEM"
>Free Filesystem Size</B
> display 
           shows filesystem sizes relative to which filesystems have the 
           most space on them: a small but very full filesystem will take 
           up less space in the graph than a large but empty one.
         </P
></DD
></DL
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><H3
CLASS="SECT3"
><A
NAME="FS-MENU-SET"
><B
CLASS="GUIMENU"
>Settings Menu</B
></A
></H3
><P
>        The <B
CLASS="GUIMENU"
>Settings Menu</B
> gives access to the 
        <A
HREF="preferences.html"
>Preferences</A
> dialogue.
      </P
></DIV
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><H3
CLASS="SECT3"
><A
NAME="FS-MENU-HELP"
><B
CLASS="GUIMENU"
>Help Menu</B
></A
></H3
><P
>         The <B
CLASS="GUIMENU"
>Help Menu</B
> gives access to the 'About' 
         dialogue box and gtop's credits.
       </P
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