This trick MAY or may NOT work. Since this DELL server is known to have preinstalled RHEL 5.5 with a valid subscription number, the chance to recover RHEL installation number is high:
1) Login to the system as root
2) Change directory to /etc/sysconfig/rhn and uses cat command to display the install-num file. Alternatively, you can just cat the file as this:
According to RHEL 5 Release Notes, the installation number is saved in /etc/sysconfig/rhn/install-num, if entered during RHEL installation. This install-num file is referred by rhn_register when registering with Red Hat Network.
1) Login to the system as root
2) Change directory to /etc/sysconfig/rhn and uses cat command to display the install-num file. Alternatively, you can just cat the file as this:
cat /etc/sysconfig/rhn/install-num
According to RHEL 5 Release Notes, the installation number is saved in /etc/sysconfig/rhn/install-num, if entered during RHEL installation. This install-num file is referred by rhn_register when registering with Red Hat Network.
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