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Upgrading RedHat 9 to Redhat Enterprise - Possible?

I am currently running Red Hat 9 and need to bring the box up to RedHat Enterprise 3. Is there anyway to do this besides a clean install? I have seen documentation regarding use yum to upgrading red hat 9 to fedora core 1 and 2. Any advice/help would be greatly appreciated.
Thanks.
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beeman000
Asked:
beeman000
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jlevieCommented:
According to RedHat only a clean install is supported as a way from RH 9 to RHEL. Upgrades from RHEL 2.1 to 3.0 and so forth are possible,

Depending on how you set the RH 9 system up, now might be a good time to re-vist the partition layout. In most cases I like a layout along the lines of:

/boot          100MB
/                   5-7GB
/var             1-3GB
/var/spool  as-req and only on a mail server
/opt             1GB
/home         free disk space
swap           2Gb or 2xmemory, which ever is larger

RedHat will place databases & web sites in /var, which doesn't strike me as a good location since /var will be overwritten on an install. But, it's pretty easy to relocate that stuff to /home, which can be preserved.
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AnonymouslemmingCommented:
If you're going to Red Hat Enterprise, then you're most likely doing it so that you can have a supported platform. If this is the case, then you have to do a re-install as this is the only way that Red Hat will support the box.

Also, as far as the swap thing goes, I'd have a look at kerneltrap. If you need more than 2GB swap, you may want to consider multiple partitions as opposed to a single big partition.

Regards,
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