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<TITLE>The Answer Gang 67: Adding a new hard drive to a running system.</TITLE>
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<H3 align="left"><img src="../gx/dennis/qbubble.gif"
height="50" width="60" alt="(?) " border="0"
>Adding a new hard drive to a running system.</H3>
<p><strong>From Roy Bettle
</strong></p>
<p align="right"><strong>Answered By Mike Orr
<br></strong></p>
<P><STRONG>
Here I was, all smart and all ... Got RH7.1 running fine, then decided I
needed more drive space. So I added a new drive. Now what? I used "fdisk"
as root to create a partition on it, but how do I "format"? I tried
"mkextfs", "mkext2fs", "make ext2 <TT>/dev/hdb</TT>", etc., after my experiences
using "mkreiserfs" earlier, but all my "ext2" attempts were in vain.
</STRONG></P>
<BLOCKQUOTE><IMG SRC="../gx/dennis/bbub.gif" ALT="(!)"
HEIGHT="28" WIDTH="50" BORDER="0"
> [Mike]
Linux's format command is "mkfs", which calls the appropriate
filesystem-specific program. So you can run either:
</BLOCKQUOTE>
<blockquote><pre>mkfs -t ext2 /dev/hdb1
</pre></blockquote>
<BLOCKQUOTE>
or:
</BLOCKQUOTE>
<blockquote><pre>mke2fs /dev/hdb1
</pre></blockquote>
<BLOCKQUOTE>
Note: <TT>/dev/hdb1</TT>, not <TT>/dev/hdb.</TT> For hard disks, you format a <EM>partition</EM>,
not the entire drive.
</BLOCKQUOTE>
<BLOCKQUOTE>
See the manpages for additional command-line options. I would especially
use the -c option to check for bad blocks, since you are using a drive of
unknown quality.
</BLOCKQUOTE>
<BLOCKQUOTE>
(For additional trivia, <TT>/sbin/mkfs.ext2</TT> is a hardlink to <TT>/sbin/mke2fs.</TT>)
</BLOCKQUOTE>
<BLOCKQUOTE>
(Additional trivia: to format a floppy disk that has never been formatted,
run 'superformat'. This creates a dos/vfat filesystem as a side effect.
If you wish a different filesystem type, run mkfs after superformatting.
The device in this case <EM>is</EM> <TT>/dev/hda</TT> since floppies don't have partitions.
</BLOCKQUOTE>
<P><STRONG><IMG SRC="../gx/dennis/qbub.gif" ALT="(?)"
HEIGHT="28" WIDTH="50" BORDER="0"
>
Also, to mount it (because I tried "mount -t ext2 <TT>/dev/hdb</TT> <TT>/mnt/tmp</TT>", etc.)
do I just edit "<TT>/etc/fstab</TT>" and add the mount point or is there an
additional step, possibly during the formatting stage? I tried the above
line but was told the mount point didn't exist.
</STRONG></P>
<BLOCKQUOTE><IMG SRC="../gx/dennis/bbub.gif" ALT="(!)"
HEIGHT="28" WIDTH="50" BORDER="0"
> [Mike]
The mount point has to be an existing directory. If <TT>/mnt/tmp</TT> doesn't
exist, 'mkdir' it.
</BLOCKQUOTE>
<BLOCKQUOTE>
You can run 'mount' and 'umount' to mount and unmount the partition
whenever you need it, or add a line in <TT>/etc/fstab</TT> to have it mount
automatically at boot time. There is no additional step. See
"man mount" and "man 5 fstab".
</BLOCKQUOTE>
<BLOCKQUOTE>
[big abubble]
</BLOCKQUOTE>
<P><STRONG><IMG SRC="../gx/dennis/bbub.gif" ALT="(!)"
HEIGHT="28" WIDTH="50" BORDER="0"
>
You "da bomb"! Thanks!
<IMG SRC="../gx/dennis/smily.gif" ALT=";-)"
height="24" width="20" align="middle">
</STRONG></P>
<P><STRONG>
RAB
</STRONG></P>
<P><STRONG>
Roy Bettle
</STRONG></P>
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