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<H4>"The Linux Gazette...<I>making Linux just a little more fun!</I>"</H4>
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<H4>By James T. Dennis,
<a href="mailto:linux-questions-only@ssc.com">linux-questions-only@ssc.com</a><BR>
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<!-- begin 43 -->
<H3 align="left"><img src="../../gx/dennis/qbubble.gif"
height="50" width="60" alt="(?) " border="0"
>Using a Downloaded .iso Image for System Upgrade</H3>
<p><strong>From ljones on Tue, 18 Jan 2000
</strong></p>
<!-- ::
Using a Downloaded .iso Image for System Upgrade
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
:: -->
<P><STRONG>
Hello,
</STRONG></P>
<P><STRONG>
I have <A HREF="http://www.redhat.com/">Red Hat</A> 5.2 installed, and have successfully downloaded the
.iso image for 6.1.
</STRONG></P>
<P><STRONG>
How do I use the image to upgrade?
</STRONG></P>
<P><STRONG>
Lawrence
</STRONG></P>
<BLOCKQUOTE><IMG SRC="../../gx/dennis/bbub.gif" ALT="(!)"
HEIGHT="28" WIDTH="50" BORDER="0"
>
Basically you have to burn that image onto a CDR or
CDRW using '<tt>cdrecord</tt>'
</BLOCKQUOTE>
<BLOCKQUOTE>
Then you can boot from the CD media and do your upgrade.
</BLOCKQUOTE>
<BLOCKQUOTE>
It would be nice if you could just mount the .iso
image on a loopback block device and run the upgrade
utility from that. However, I don't think you can
do that. There's no problem with the mounting part,
just use a command like:
</BLOCKQUOTE>
<BLOCKQUOTE><BLOCKQUOTE><CODE>
mount -o loop /path/to/....iso /mnt/loop
</CODE></BLOCKQUOTE></BLOCKQUOTE>
<BLOCKQUOTE>
... to mount the <tt>.iso</tt> file as a filesystem. The
problem is that the installer/upgrader for Red Hat
is set up to run from the initrd (initial RAM disk)
or from the init process. I haven't torn it apart
and looked that closely at it --- but it doesn't
seem like you can just mount the image, or the CD
and run the installer/upgrader. You have to boot
from it.
</BLOCKQUOTE>
<!-- sig -->
<p><em>[ Should be pretty easy to boot from one of its floppy images, then
point to your loopback mounted drive location as a file source.
You </em>might<em> have to mount it at /cdrom in order to convince
the diskette to use it. -- Heather ]</em></p>
<!-- end 43 -->
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<H5 align="center"><a href="http://www.linuxgazette.com/copying.html"
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<BR>Published in <I>The Linux Gazette</I> Issue 50 February 2000</H5>
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