1 | <sect1 id="ch08-fstab">
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2 | <title>Creating the /etc/fstab file</title>
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3 | <?dbhtml filename="fstab.html" dir="chapter08"?>
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4 |
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5 | <para>The <filename>/etc/fstab</filename> file is used by some programs to
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6 | determine where partitions are to be mounted by default, which file systems
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7 | must be checked and in which order. Create a new file systems table like
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8 | this:</para>
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9 |
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10 | <screen><userinput>cat > /etc/fstab << "EOF"</userinput>
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11 | # Begin /etc/fstab
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12 |
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13 | # filesystem mount-point fs-type options dump fsck-order
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14 |
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15 | /dev/xxx / fff defaults 1 1
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16 | /dev/yyy swap swap pri=1 0 0
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17 | proc /proc proc defaults 0 0
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18 | devpts /dev/pts devpts gid=4,mode=620 0 0
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19 | shm /dev/shm tmpfs defaults 0 0
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20 |
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21 | # End /etc/fstab
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22 | <userinput>EOF</userinput></screen>
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23 |
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24 | <para>Of course, replace <filename>xxx</filename>, <filename>yyy</filename>
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25 | and <filename>fff</filename> with the values appropriate for your system --
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26 | for example <filename>hda2</filename>, <filename>hda5</filename> and
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27 | <filename>reiserfs</filename>. For all the details on the six fields in this
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28 | table, see <userinput>man 5 fstab</userinput>.</para>
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29 |
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30 | <para>When using a reiserfs partition, the <emphasis>1 1</emphasis> at the
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31 | end of the line should be replaced with <emphasis>0 0</emphasis>, as such a
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32 | partition does not need to be dumped or checked</para>
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33 |
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34 | <para>The <filename>/dev/shm</filename> mount point for tmpfs is included to
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35 | allow enabling POSIX shared memory. Your kernel must have the required support
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36 | built into it for this to work -- more about this in the next section. Please
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37 | note that currently very little software actually uses POSIX shared memory.
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38 | Therefore you can consider the <filename>/dev/shm</filename> mount point
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39 | optional. For more information, see
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40 | <filename>Documentation/filesystems/tmpfs.txt</filename> in the kernel source
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41 | tree.</para>
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42 |
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43 | <para>There are other lines which you may consider adding to your
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44 | <filename>fstab</filename> file. One example is a line to use if you intend to
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45 | use USB devices:</para>
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46 |
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47 | <screen>usbfs /proc/bus/usb usbfs defaults 0 0</screen>
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48 |
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49 | <para>This option will of course only work if you have the relevant support
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50 | compiled into your kernel.</para>
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51 |
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52 | </sect1>
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53 |
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