[673b0d8] | 1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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| 2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN" "http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd" [
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| 3 | <!ENTITY % general-entities SYSTEM "../general.ent">
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| 4 | %general-entities;
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| 5 | ]>
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[3be4d97] | 6 | <sect1 id="ch-bootable-fstab">
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[6370fa6] | 7 | <title>Creating the /etc/fstab file</title>
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[673b0d8] | 8 | <?dbhtml filename="fstab.html"?>
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| 9 |
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| 10 | <indexterm zone="ch-bootable-fstab"><primary sortas="e-/etc/fstab">/etc/fstab</primary></indexterm>
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[6370fa6] | 11 |
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[548d65f] | 12 | <para>The <filename>/etc/fstab</filename> file is used by some programs to
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[673b0d8] | 13 | determine where file systems are to be mounted by default, which
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[548d65f] | 14 | must be checked and in which order. Create a new file systems table like
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| 15 | this:</para>
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[6370fa6] | 16 |
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[21ba4e3] | 17 | <screen><userinput>cat > /etc/fstab << "EOF"</userinput>
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[6370fa6] | 18 | # Begin /etc/fstab
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| 19 |
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[ab3b93b] | 20 | # file system mount-point fs-type options dump fsck-order
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[d5062b8] | 21 |
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[e683065] | 22 | /dev/xxx / fff defaults 1 1
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| 23 | /dev/yyy swap swap pri=1 0 0
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| 24 | proc /proc proc defaults 0 0
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[9dfc02f] | 25 | sysfs /sys sysfs defaults 0 0
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[e683065] | 26 | devpts /dev/pts devpts gid=4,mode=620 0 0
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| 27 | shm /dev/shm tmpfs defaults 0 0
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[6370fa6] | 28 | # End /etc/fstab
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[21ba4e3] | 29 | <userinput>EOF</userinput></screen>
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[6370fa6] | 30 |
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[548d65f] | 31 | <para>Of course, replace <filename>xxx</filename>, <filename>yyy</filename>
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| 32 | and <filename>fff</filename> with the values appropriate for your system --
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| 33 | for example <filename>hda2</filename>, <filename>hda5</filename> and
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| 34 | <filename>reiserfs</filename>. For all the details on the six fields in this
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[a56c4bb] | 35 | table, see <command>man 5 fstab</command>.</para>
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[d5062b8] | 36 |
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[548d65f] | 37 | <para>When using a reiserfs partition, the <emphasis>1 1</emphasis> at the
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| 38 | end of the line should be replaced with <emphasis>0 0</emphasis>, as such a
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| 39 | partition does not need to be dumped or checked</para>
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[d5062b8] | 40 |
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[548d65f] | 41 | <para>The <filename>/dev/shm</filename> mount point for tmpfs is included to
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[360e2c4] | 42 | allow enabling POSIX shared memory. Your kernel must have the required support
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| 43 | built into it for this to work -- more about this in the next section. Please
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| 44 | note that currently very little software actually uses POSIX shared memory.
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| 45 | Therefore you can consider the <filename>/dev/shm</filename> mount point
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| 46 | optional. For more information, see
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| 47 | <filename>Documentation/filesystems/tmpfs.txt</filename> in the kernel source
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| 48 | tree.</para>
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[cfdcaef7] | 49 |
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[548d65f] | 50 | <para>There are other lines which you may consider adding to your
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[e683065] | 51 | <filename>fstab</filename> file. One example is a line to use if you intend to
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| 52 | use USB devices:</para>
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[6370fa6] | 53 |
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[a56c4bb] | 54 | <screen> usbfs /proc/bus/usb usbfs devgid=14,devmode=0660 0 0 </screen>
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[987aa00] | 55 |
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[a56c4bb] | 56 | <para>This option will of course only work if you have the
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| 57 | "Support for Host-side USB" and "USB device filesystem"
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| 58 | compiled into your kernel (not as a module).</para>
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[987aa00] | 59 |
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[6370fa6] | 60 | </sect1>
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